windows frequently restarting

[cindyo]

Hi. I have a Sony VAIO with Vista Business 32-bit, and use Kaspersky Internet Security Suite. I have had the PC for about 6 weeks. Ever since the infamous February 13 automatic updates, I have had a problem with Windows stopping and then restarting. I have not been able to ID certain websites...it seems to happen with many of them. I have also had issues with "Certificate Errors" ;like many of you. Any ideas out there?

[crazlunatic]

Consider reverting some suspicious upgrades. Open the Windows Update panel and at the bottom should be Installed Updates. You can manually uninstall updates there.

If you're a risk taker, I suggest you check this guide out. I also suggest you go to the 2nd option.
How to identify a buggy device driver on Windows Vista | Vista Rewired