Computer randomly restarts

[KidNovelist]

My computer restarted randomly and it rebooted itself without going into BIOS.

On my desktop screen I received an hardware error problem and Microsoft said it was:
Problem caused by computer hardware
This problem was caused by an unrecoverable hardware error that caused the operating system to stop functioning.
http://wer.microsoft.com/responses/Response.aspx/571/en-us/5.1.2600.2.00010300.2.0?SGD=a4a6a9ee-8bb2-41bb-bf03-753ae0ac09e8

What should I do?

I have Sony Vaio PCV-W500GN1 and Windows XP OS.

[patio]

Your link has no info in it...please supply the complete error message so we can assist further.