Its a troubleshooting/diagnosis option in Windows that starts your computer in a limited state with only the essential drivers, services and files needed to boot Windows. Network and Video drivers are not loaded in safe mode. That’s the reason you see a low desktop resolution in safe mode.

There are  3 ways to start Safe Mode:

1. Safe Mode (The default one with no internet)
2. Safe Mode with Networking (the one with internet)
3. Safe Mode with Command Prompt.

People usually get rid off their Spywares in this mode. So this manual troubleshooting and fixing is the option for manual eradication of spyware as only the bare minimum files are loaded in this mode and lets you delete files easily which are unable to delete in the normal mode.

How to start Windows Xp in Safe mode?

1. Press F8 before the Windows Xp Splash screen(see image below) shows up.

2. The Windows Advanced Options Menu is loaded.

3. Use keyboard arrow keys to select the type of Safe mode you want – default or with networking or just the command prompt. Click Enter.

4. Now the Windows Xp will start in Safe mode.

How to start Windows Vista in Safe mode?

1. Start pressing F8 as soon the computer starts, to open the Advanced Options Menu.

2. Use keyboard arrow keys to select the type of Safe mode you want – default or with networking or just the command prompt. Click Enter.

3. Now the Windows Vista will start in Safe mode.

How to start Windows 7 in Safe mode?

1. Start pressing F8 as soon the computer starts, to open the Advanced Options Menu.

2. The first option is “Repair your computer”, “Safe Mode” is from the second option. Use keyboard arrow keys to select the type of Safe mode you want – default or with networking or just the command prompt. Click Enter.

3. Now the Windows 7 will start in Safe mode.

Note: When you have Multiple Windows to boot, select the Windows version you want to enter into using the arrow keys on the “Boot Loader Menu” and start pressing F8 key to open the Advanced Options Menu.

Using the System Configuration Utility for Windows Xp

1. Click Start, Run and type MSCONFIG in the open box and click OK
2. The System Configuration Utility opens up, On the BOOT.INI tab, Check the “/SAFEBOOT” option, and then click OK and Restart your computer when prompted.
3. The computer restarts in Safe mode.
4. Perform the troubleshooting steps for which you are using Safe Mode.
5. When you are finished with troubleshooting in Safe mode, open MSCONFIG again, on the BOOT.INI tab,  uncheck “/SAFEBOOT” and click OK to restart your computer in normal mode.

Using the System Configuration Utility for Windows Vista/Windows 7

1. Open up start menu > run, and type in msconfig and hit the enter key.
2. Select the Boot tab, and then check the box for “Safe boot” and make sure the radio button below is set to “Minimal”. Minimal is equivalent of the default safe mode in Advanced Options Menu.
   
3. After you press the OK button, you’ll be asked if you want to Restart now or wait until later. Press Restart now to restart your computer in safe mode immediately, or press wait until later, the next boot will take you into safe mode.
4. After starting into the safe mode, the “safe mode” text is placed corners of the screen,it also opens up the safe mode page from the help file in Windows 7 or Vista.

Note:  To Turn Safe Mode Back Off

Once you are done troubleshooting whatever you were working on, to turn safe mode off and go back to normal mode. Just open up msconfig the same way as above, and then on the Boot tab and uncheck the “Safe boot” checkbox.

Fix Ntoskrnl.exe Errors
How to fix Bcmwltry.exe Error?
Fix bootmgr is missing
]]> http://www.optimize-your-pc.org/how-to-start-windows-in-safe-mode/feed 0 http://www.optimize-your-pc.org/fix-bootmgr-is-missing?utm_source=rss&utm_medium=rss&utm_campaign=fix-bootmgr-is-missing http://www.optimize-your-pc.org/fix-bootmgr-is-missing#comments Sat, 10 Sep 2011 19:47:31 +0000 admin http://www.optimize-your-pc.org/?p=858 Fix trustedinstaller.exe – Missing file Issue and 100% CPU issue
How to Fix User32.dll Error – c0000135 Blue screen of death
How to Fix “Corefoundation.Dll Is Missing” Error?
]]> What is Bootmgr?

To know this, lets understand how Windows vista and Windows 7, and any Windows OS that is released after Windows Vista loads up after switching the computer power on.

As soon as you switch the computer power on > BIOS is  loaded > which loads MBR (Master boot record) from hard disk or usb drive > Which then loads Boot sector (the portion on the hard disk or usb drive) > which then executes Boot Manager which is Bootmgr file!

It then finds active partition on the disk to read boot configuration data which loads the Windows Vista or Window 7!

So now, you understand what part does bootmgr play in loading up the OS.

The problem – Bootmgr is missing!

When Bootmgr is missing, you see the boot process is stopped right at the Boot sector which is unable to find the Boot manager. Boot Manager is now unable to invoke winload.exe file to load ntoskrnl.exe (OS kernel) and device drivers (boot drivers)!

You can see from the screenshot above that winload.exe is unable to load.

The solution – How to fix “Bootmgr is missing”

As you can see the solution is evident from the above screen grab.

1. Set your computer to boot from DVD (using the Boot setting in the BIOS).
2. Insert Windows Vista or Windows 7 DVD.
3. Restart the computer.
4. After booting from the DVD, the installation screen prompts you to choose Languages to install, Time and currency format and keyboard or input method. The values would be for ex. English, English (United States) and US respectively. Click Next to continue.
5. Now instead of proceeding to install, look for the link in the lower left hand corner, “Repair your computer”. Click on it.
6. You need the select the correct installation directory to repair if you have more than 1 installation of Windows Vista or 7. Then click next.
7. You are now taken to the “System recovery options”. Click the first one in the list, Startup Repair.
   
8. The installation program now repairs the Operating system, fixing the Bootmgr in the process. When its done, restart and the error is gone!

Note: You can alternatively execute the boot repair from the command window. Just insert DVD and choose command prompt. Type bootrec /fixboot as shown in the screen grab below,

TrustedInstaller.exe is used by or it’s by itself a Windows Vista service  – Windows Module Installer. The file is small and its location is C:\Windows\servicing\TrustedInstaller.exe. As its name implies – Trusted Installer has rights over essential Windows Vista programs and applications. Only after the approval from TrustedInstaller.exe, a service or program is allowed by the OS to use the needed system resources – CPU, RAM, etc…

Avast Antivirus used to report this file as an infection which is a false positive.

Why do you need this file?

Its an authorizing service commonly used for Windows update. This is a system file needed by the Windows Vista!

Missing TrustedInstaller.exe!

You cannot use Windows update if this file is missing – error code 80070424. To fix that you would need to get an official copy of this file from Windows CD, and place that in the folder,  C:\Windows\servicing\. That must fix this issue.

Alternatively you can fix it with a Windows Vista recovery disk. If you don’t own a disk, here’s how to make one yourself.  Download Windows Vista Recovery Disc from neosmart.net and Download ImgBurn from imgburn.com. Burn the image onto DVD with the ImgBurn, boot from it and repair. After that’s done you should have TrustedInstaller.com up and running.

High CPU issue!

You might have thought that this file is a malware because of its name. But its a system file. It is known to run at random time taking CPU to its 100% and slowing down the PC.

To resolve this,

Set the service “Windows Module Installer” to start manually instead of starting every time at windows load.

1. Click on Start, type msconfig, Enter.
2. Click Continue when User Account Control prompt is displayed.
3. In the System Configuration window, open the Services tab.
4. Find Windows Module Installer and clear the check box.
5. Click OK – save your changes and exit.
6. Now, open Services window again and change the Startuptype of Windows Module Installer to Manual.

That’s it.

Windows Vista Sp1 seems to have fixed this bug. You could also fix this issue by disabling automatic Windows update, but that’s something I would not recommend you to do it.

By now you should know how to get it back if its missing, or to fix the high CPU issue.

Recommended Download: Scan for Your PCs missing file or fix buggy file with a Registry Optimizer Tool

Overtime your PC slows down. Or it is already slowing down. Slow starting up or shutting down. Applications take long time to open. Even sometimes you hear the hard drive making noises. Despite having the latest Windows with all update fixes, constant crud inducing habits such as installing and uninstalling of programs can make your PC sluggish.

I am in this article going to talk about how to clean it up without having to reformat your hard disk or reinstall Windows or doing anything to overhaul it from the scratch. But simple fixes that takes the crud out of your computer and prevent those cluttering habits here on.

Why PC slows down? Possible Hardware issues and fixes.

• Over heating of processor:

  Problem	Solution
  Cooler fans that’s mounted on processor gets dust and slows down. This heats up the processor. Upon reaching certain temperature set in the BIOS, the system slows down.	To fix this, make sure the fan is clean. Take your laptop or terminal to service center, and ask them to clean up all the dust. You can do this yourself if you have previously opened your terminal or laptop.

• Hard drive failures from bad sectors:

  Problem	Solution
  Over time, hard disk starts to develop bad sectors  (Sectors are small data units on hard disk), from frequent data usage. In that case the new data are automatically copied to free or good sectors. But this wont happen exactly as is, the data might end up on bad sectors resulting in the failure of that data. As the drive starts to fail, this would then happen often.	To fix this, turn on SMART features in the BIOS  to let the SMART diagnose alert the failure immediately. In addition to that, benchmark tools such as Fresh Diagnose or Aida64 (previously known as Everest) helps to run results of your system hardware and know its current status to easily determine whether to carry on with it or buy a new one.

Why Windows slows down with use? Tracking down and cleaning out the crud.

Moving on to Windows itself now. There are three main causes that stems with the long time usage of Windows. Those are Cluttered up Windows Registry, multiple copies of program associated library files, back ground services and tasks, and fragmented hard drive. As you install and uninstall more programs, the Registry gets ballooned up, as well as creating a lot of junk and associated library files, such as the DLL files and as well as making the hard disk more fragmented. Now lets talk about these issues one by one.

• Windows Registry:

  Problem

  Solution

  Windows registry is a database where windows stores application install and configuration settings, hardware settings etc… Installing and uninstalling program, overtime can balloon up the size of registry. The size of it is about more than a quarter of my memory on my PC here, which is about 425 MB of registry database itself. Larger application like Anti Virus, Video Players stores its data on multiple location in the Registry. Added to that, incomplete uninstallation never totally clean sweep the registry off its obsolete data. This makes retrieving the needed data from the registry harder, as a result application takes long time to load.

  To fix this, as opposed to what other computer professionals believe in, I tend use registry cleaner and it works pretty well for me. Windows registry is a complicated database, but that doesn’t necessarily mean  computer vision or Artificial intelligence cannot put the maintenance of registry on automation to atleast some extent. An automated registry maintenance involves, complete backup of entire Windows registry and associate a system restore point, before performing its operation on it. It can clear up obsolete entries left by uninstallation of programs, duplicated and invalid entries with ease. This ensure clearing up of atleast 50-150 MB. In addition to that it can defragment Registry Hives (the parts of registry).

• Junk background services and task :

  Problem

  Solution

  Installing programs often also adds more to the background services. You can check how many background services that are running by going to Start > Run > services.msc and take a look at a list of services that are Enabled. In addition to background services, also the ones that run during system start up in the memory. This can be a problem when that particular program takes more memory or CPU. You can check the system start up list by going to Start > Run > msconfig.

  To fix this, Soluto can help you with the community-driven data. Soluto lets you turn off unwanted start up programs and background windows services and speeds up boot time. Also you could go to taskmanager (Start > Run > taskmgr) or Windows Resource Monitor (Start > Run > resmon) and monitor the cpu and memory usage. Shutdown the program that is not currently necessary. I personally use Process Explorer which shows processes in a tree view and has a lot of options. You could as well defragment page file or the virtual memory with PageDefrag. This enables quick access of data in page file and hence a little faster system.

• Fragmented Hard disk:

  Problem	Solution
  Over the time with creation and deletion of files and programs, the hard disk becomes fragmented. When the hard disk is almost full that swapping memory on to it (for page file or virtual memory) becomes an issue, the system slows down.	To fix this, run disk clean up tool, by going to Start, All Programs, Accessories, System Tools, Disk Cleanup. Make sure you only delete the temporary files, and not the system restore point or shadow copy files. Also don’t compress unused system files. Defragment fragmented hard disk. Run this when you don’t need much system use, as defragmenting will keep your system busy and hence slow.

Now that you have seen how easy it is to clear out the crud from your PC, lets talk about how to prevent it from happening again, and totally avoid reformatting hard disk or reinstalling windows to get back that new PC again.

Steps to maintaining a clean PC.

1. When installing a new program, see if the application has an advanced option. Make sure to use it. You could set the location to install, choose what components and extra utilities to install, and as well turn off running at system startup or quick launch setup if you don’t want.
2. Use Soluto with msconfig and services.msc to turn off unwanted background services and program running on memory at system start up.
3. Use disk cleanup tool to clean temporary internet and installation files.
4. Auto schedule disk defragment to run once a week.
5. Make sure to not install any browser addons as that might install malwares and crudwares.
6. Defrag Registry and clean it up with a registry cleaner tool.

Recommended third party tools (5 options).

1. registry cleaner
2. Aida64
3. Soluto
4. Process Explorer
5. PageDefrag

1. Antivirus pogram or backup tool, sometimes is the cause, because when its Vista incompatible.

2. Also, when hardwares are Vista incompatible. So does the corrupted device drivers, BIOS firmware incompatibility, and a corrupted installation of system services.

3. Failed hardware.

Steps to resolve STOP 0x0000000A

1. Remove all external hardwares such as CD, DVD, printers, camera, sound card, network/wifi card, USB stick etc… and confirm they are all VISTA compatible. Dont plug in yet.

2. The next step is to restart the computer, and press F8 immediately when the PC starts to open Advanced Boot Options. Select System Recovery Option, and press System Repair. This starts the repair process of the entire PC.

3. Once the repair is done, plug in all the Vista compatible hardwares. Now click on Start->Control Panel->System and Maintenance->Problem Reports and Solutions. This must find the driver updates, run them. Now the problem must be resolved!

4. In come cases, you still see the error during startup but the windows loads. In that case go to c:\windows\system32
right click cmd.exe and Run As Administrator. Enter mdshed.exe.  This opens up Windows Memory Diagnostic tool. Click on “Restart now and check for problems (Recommended)”. System restarts now to run this tool. This will diagnose all the memory problems as this STOP 0x0000000A IRQL_NOT_LESS_OR_EQUAL is related to memory.

4. b. Making sense of Windows Memory Diagnostic Test Results

If the test fails RAM is failed, i recommend you to get a new memory. Crucial.com is the best place i personally get my memory sticks.

If the test shows errors message “Hardware problems were detected”. The following steps helps,

i. If you have only one RAM, get another one for the test. (other computers or even friends)

ii. Run an Extended memory test (press T on the Tool screen) for both the RAM one by one at one RAM module, keep the others free. This might take a while. If your RAM has errors while the other hasn’t then its an hardware problem. Get a new one. Ram sticks are dirt cheap at crucial.com.

Its good to have all the maintenance tools with Vista compatibility. A good vista compatible antivirus, antispyware and Registry Optimizer Tool will make up for a great arsenal of PC health maintenance tool.

Process Explorer, shows the break down of sub process, showing memory usage of each one, helping you find what actually accounts for more of the overall memory usage of the process.

If in any case you are not aware of a particular sub process, google it to see if its a spyware and fix it.

Click on the image for full screen view. To get an interface like what you see in this image, in the Process Explorer, go View > Select Columns>Process memory tab. Check “Working set size”. Click OK. This will now show RAM/memory usage. Then, in main window, look for “System” process. Expand it, so sub processes are shown.

As you can see from the image above, the problem lies with the svchost.exe while i was expecting AVG module, avgwdsvc.exe to be the culprit. In that case, uninstalling AVG and reinstalling the latest version seldom helps. Looking for an alternative such as Avast or even better a paid one such as Kaspersky helps.

After examining, it seems that svchost should be a process on its own and in some cases it gets nested under system when sub process of svchost accessing that of system.

Researching more, shows that avdwdsvc.exe which is known as AVG Watchdog, a service that monitors other AVG components, to be examined. As expected the problem lies here. Seems like there is a memory leak, ie. more memory usage.

To fix this disable AVG watch dog service. To do that, go Start Button > Run > type services.msc. Find the service ‘AVG8 Watch Dog’, right click on it, click disable. Exit and reboot. By then the problem must be solved if not uninstall AVG.

To prevent high memory usage of processes, its must to have a reliable Registry Optimizer Tool, in addition to a firewall, antispyware and antivirus program. This is because, after a spyware fix, its must to clean its remnant, to avoid invalid registry entries slowing down your PC.

A user32.dll file is a part of Windows User API (Application Programming Interface). Its one of those files that interact between users inputs (from the programs) and windows OS. Most of the programs depend on this file. So its dangerous to remove this.

To fix the problem related to User32.dll, the following steps help,

1. Turn on windows automatic update. If you haven't already, click the start button, click Run, type sysdm.cpl, click Automatic Updates tab and choose "Automatic (recommended) Automatically download recommended updates for my computer and install them" and click ok.
    
2. If there is an User32.dll error after installing a program or hardware driver, uninstall that program and reboot your PC. Maybe there is a fault with that program or driver and you need to install the latest version of it.
    
3. If above steps failed, problem lies with the User32.dll file itself. Get a Windows OS CD that you installed your current version of windows with. Open the CD drive folder, navigate to i386 folder, and find User32.dl_. Copy that somewhere temporarily and rename it to User32.dll. Copy that now to C:\Windows\System32 folder, when prompted to rewrite that, hit ok.
   • If your prefer using recovery console, in case when you are unable to boot the PC. Insert the Windows OS CD, xp or vista or windows 7, whatever you have installed. Select the right booting if you have multiple boots. Enter password when prompted. A blank password for the windows xp home edition. When the welcome screen appears type R to start Recovery console. At the command prompt type, expand [CD ROM DRIVE]:\i386\user32.dl_ c:\windows\system32. CD ROM DRIVE is the drive letter for cd rom. In my PC its J:\. Type Exit, hit enter and restart the PC, remove the CD Rom for the normal boot.

This must do it for you. If not, you can use system restore to a point closer to today's point. Also i recommend that you clean the mess off your PC's registry using a Registry Optimizer Tool to keep your PC's health in good condition, in addition to of course, antivirus, antispyware and disk tool checkups.

Using Windows Registry Editor “REGEDIT”:

A windows registry editor is basically a tool to edit the registry. But the good news is this tool will also let you backup a portion of your windows registry. Let’s briefly talk about how to backup your windows registry using REGEDIT.

1. Click the start button > Run > type REGEDIT and then press ok.
2. Once the REGEDIT is open, select File > Export.
3. Choose and enter the name of the backup file in the File name window.
4. To backup entire registry, select ALL in the Export Range. To make a backup of a portion, select the branch that you want to save and backup it.
5. Click on save, this will create a backup file in the location you choose. Make sure to keep a copy in the external storage device like USB drive and External Hard drive, so if one copy destroys you can use another!

Using Windows System Restore Utility:

This utility available in Windows Vista, restores your system to last known working condition to avoid any mishap in the system. System restore is turned on by default. When the system restore is turned on, it takes a portion of your disk space in that it archives copies of all your system files, settings & configurations and even the windows registry and creates a restore point. When you restore to a restore point, it will take your computer to that point just like a time machine. The only pitfall though when it comes to registry, it only archives a portion of the registry; So thus when you move back in time to a particular restore point, all the changes made to registry since that restore point time, is lost.

Using windows special “complete PC backup and restore” utility not available to Vista home version:

Yes this utility is not available to Vista Home, but it’s available to Vista Ultimate, Vista Business, Vista Enterprise editions. This is also not available to Vista Student edition. This utility creates a complete snap shot of your registry in whole, system files and data, configuration and settings file, other files and programs, and even the OS files. This also has a pitfall in that you can’t save a portion of your registry, but only a whole dump.

So far we’ve talked about the manual backup of Windows Vista Registry, now let’s talk about doing it automatically, which is what I do.

Using Registry Cleaner tool to automatically Backup Windows Vista Registry:

Registry cleaner not just takes care of registry it can also create backups. A commercial registry cleaner like we promote in this site, will help you take backups like a piece of cake. These are also Windows Vista compatible. Registry cleaners unlike the manual backing up method will help you automatically take partial registry and full registry backups. I personally use a registry cleaner to backup my registry, which is quite a popular method for a PC technician like me. This is what we use when you give your computer to us for a service; we use this utility to keep your PC in good working condition!

When you use this tool, you must periodically make a backup of your windows registry. It is one way of ensuring the safety of your OS. Like said before, when you make any kinds of backup, I recommend you to save it in a USB drive and External Hard drive or even burn it up in a CD or DVD. Keeping multiple copies are handy in case if one copy gets destroyed, you can always use another.

Manually backing up windows vista registry:

1. This is done with the help of system’s registry editor utility that comes with every operating system. This tool lets you manually edit and even backup a portion of registry. To do a backup, click on start button > Run > type regedit > File menu > Export > Enter file name > select the required Export range – partial, specific or complete backup > save the file.
2. You can also use system restore tool which is available in windows vista. Restoring is enabled on default once your PC meets all its required specifications. This lets to take your computer back in time, like a time machine, to the latest known working condition. This is helpful when the system fails. This is another way to manually backup and restore your registry in which that, you can only backup the registry wholly and any changes that made after that time you decided to travel back is not available to the registry. That is the only pitfall of this method. Using the system restore, if you are a technical person, you can get into where the system restore saves its file and then find where the registry is saved and take a copy for backup, although this is only recommended for advanced users.
3. If you have a windows vista Enterprise or ultimate or business version of the OS, there is a utility called “Windows Complete Backup and Restore”. This like the method 2 will only take a full backup and there is no way to partially backup.

Automatically backing up windows vista registry:

You can do this with a registry cleaner tool. There are many registry cleaner tools available in the internet that will let you backup your registry automatically. But make sure you invest in a commercial registry cleaner to get the most of it. Commercial tool will have a sophisticated one-click automatic registry backup feature that lets you backup before each scan or just whenever you want it. You can also schedule the backup just like scheduling the scanning. You can do all kinds of backup with a registry cleaner tool – partial or whole without any hassles!

So I recommend you to schedule the backup regularly or do it periodically.  When you do that don’t just save a copy of the backup file to your hard disk drive alone, but also a copy in USB drive and another copy in external Hard disk drive like I do! Make sure you have multiple copies so that if one copy gets lost or corrupted, you can always use another one.

Though advanced it in its process, it like its predecessors still uses a registry as its vital information manager while kernel being the core. Thus it’s obvious that the registry issues experienced with the older versions like Windows Xp, Windows Me… are also observed in Windows vista too! Since registry is still the heart of this enhanced version of the MS OS family, the problems in the registry such as file corruption, invalid entries and being bloated is still a threat to the PC!

Thus regardless of the versions, the concept of understanding the core of the registry problem is helpful in resolving modern registry errors. With the good comes the bad too, the windows vista registry is more advanced and sophisticated but still it has more potential threats, and before you start to worry, the tools that fixes problems are intelligent as well.

If you are not well aware of the structure of the registry or what it did so far in the windows operating system, let me give a quick overview of that. Registry is like said before is the heart of the PC. It registers and stores the mandatory component of software, hardware, device drivers and other system components. All the information about any program you name it, the settings are registered in the registry. All programs use windows registry to save its user, application and process settings. Even your windows user profile data is also stored in this big registry.

Why the system still suffers from slow execution even with this enhanced version of OS?

The registry cannot stop accepting entries from wide variety of programs. Likewise it can remove all the invalid entries on its own when a program removes and ceases to use the registry anymore. Thus in overtime the registry is cluttered without proper management. The house keeping is unfortunately not automatically carried out. Thus the registry bloats up with too many entries that are invalid and no longer active. This may even induce conflict with other working entries. Just imagine that there are lots of invalid and useless files in your office room that are just collecting dust and only occupying space and troubling the easy access of needed files. It’s the same scenario with this registry too. With large and unorganized registry the system has to spend more time sorting out to get the information it wants, thus the more system processing time and slow PC!

Despite that, the infiltration of malwares such as virus, spyware, Trojans, worms, adware… only creates garbage in the registry. Let alone be the invalid and useless entries, how about an entry that harms and creeps into your valuable file infecting it without your notice? Even antivirus and antispyware doesn’t clean all the mess made by these malwares!

So what is the solution or the bottom line?

Registry re-organization and fixing is the call! This is where a tool like registry cleaner or optimizer comes into the picture. It makes sure that the registry is organized, compact and easy to access thus speeding up the computing time that it takes accessing the registry. Since the softwares and hardwares always keep communicating with the registry, imagine what a compact and optimized registry can do? It not only improves the PC speed but it also keeps the system error free and hassle free. Thus it’s vital that you invest in a registry cleaner if you haven’t yet already! The registry cleaner is fully automated, with a push of a button it’s programmed to re-organize, clean, and fix the registry clearing all the invalid and corrupted entries. By scheduling the registry cleaner to run atleast once a day the system health is good. It just won’t be fast but also error free and safe. But before you buy just any registry cleaner, make sure its Windows Vista compatible. The registry cleaner we recommend in this site already meets all our requirements!