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Today I turned on my computer. It kept on restarting because it was at stage 3 of 3 of Windows update at the login screen. When it could not find the files or can’t install them, the computer restarted and tried again and again. It was very frustrating.
To fix this problem of endless reboots, I booted to the HP Recovery Manager by pressing F11, and went to the system restore section by pressing the advance button, and picking a date when my computer was starting normally. I waited for my computer to restore itself to an earlier date and hoped it worked at stopping the constant restart and install cycle. It did work, and now my computer starts regularly. My problem with constant reboots in Vista is gone.
It also might be possible for people to press F8 and go into Windows Safe mode, and do a system restore by going to Start Menu > All programs> Accessories > System Restore to an earlier date. I’m not sure if this work because I used HP version of system restore instead of Windows. If that does not work, you can try uninstalling some Windows Updates in Windows Update if you can get into safe mode.
If all my suggestions fails, you can back up all your files by booting to a Ubuntu Live CD to copy all your files to another drive, or partition, format and do a clean install of Windows. But, it would be very time consuming.
If your computer is fine, I recommend you Image/Clone your hard drive with Clonezilla which is a free hard drive clonning software that boots from a Live CD to clone your drives, so when you need to reinstall Windows or Linux. You can quickly restore your computer to your last clone you made by cloning your drive with the image file clone you made.