How to repaire currepted windows vista OS ?

Startup Repair

Problems starting up a PC can be tricky to fix, since Windows hasn’t had a chance to load its arsenal of troubleshooting tools. Some people simply give up and reinstall Windows.

Startup Repair can prevent a time-consuming reinstallation by diagnosing and repairing problems that prevent Windows from starting.

Startup Repair is designed to start automatically if Windows detects a startup problem. 

Startup Repair: frequently asked questions.

What is Startup Repair?

Startup Repair is a Windows recovery tool that can fix certain system problems that might prevent Windowsfrom starting. Startup Repair scans your computer for the problem and then tries to fix it so your computer can start correctly.

Startup Repair is one of the recovery tools in the System Recovery Options menu. This set of tools is located on your computer's hard disk and on the Windows installation disc.

How do I use Startup Repair?

If a startup problem is detected, Startup Repair will start automatically and try to fix the problem.

If the problem is severe enough that Startup Repair doesn't start on its own and you can't access the System Recovery Options menu on your computer's hard disk, you can get to the menu and start Startup Repair by using the Windows installation disc or a system repair disc that you created earlier.

Are there problems that Startup Repair can't fix?

Startup Repair can only fix certain problems, such as missing or damaged system files. It can't fix hardware failures, such as a failing hard disk or incompatible memory, nor does it protect against virus attacks.

Startup Repair isn't designed to fix Windows installation problems, nor is it a backup tool, so it can't help you recover personal files, such as photos or documents. To help protect your computer, back up your system and files regularly. For more information, search for "backup" in Windows Help and Support.

What if Startup Repair can't fix my problem?

If repairs aren't successful, you'll see a summary of the problem and links to contact information for support. Your computer manufacturer might include additional assistance information.

system recovery options in Windows

The System Recovery Options menu contains several tools, such as Star tup Repair, that can help you recover Windows from a serious error. This set of tools is on your computer's hard disk and on the Windowsinstallation disc.