Unplug USB - Computer Shut Off

[ninjamonkey]

Hmm, what's BSOD?

[Virtualbody1234]

Blue Screen Of Death.

As previously stated, you would get a BSOD with an error code if you disable the Automatically restart feature that is built-in Windows XP. That error code can help pinpoint a solution to your problem.

It can be found in: System Properties>Advanced tab>Startup and Recovery settings>System Failure section.

[tesco]

The computer went black and restarted

In that cause right click my computer ->> properties ->> advanced ->> startup and recovery settings ->> uncheck automatically restart
Then next time you will get a BSOD. Write down the error then google it.
Likely this is a driver problem.