my laptop restart itself

Could it be you've received an update, like from microsoft? Those things require a restart to complete installation, and will restart the computer for you. This would only happen once a week, though. It's probably something else, but I thought I would mention it.

Hard to say what's wrong without a lot of sleuthing, but you can probably fix it with system restore whatever it is:

http://www.microsoft.com/windowsxp/using/helpandsupport/learnmore/systemrestore.mspx

Thanks everybody, Hi roger. I think it's a bug, I can't log in but in the safe

mode. Whenever I want to log on using normal window it restarts itself.

Have you recently installed any new software, hardware, drivers?

There is a known reboot problem with XP sp3 and AMD chipset combination, if you have these.

RUN YOU AV PROGRAM< AND KEEP IT RUNNING IN THE BACKGROUND FOR 24HR. I HAD THE SAME THING A MONTH AGO, AND IT WAS A SPY VIRUS RUNNING BY REMOTE ACCESS. YES, SHUT DOWN ANY WIRELESS ACCESS AND GO BACK TO LAN. WATCH FOR EMAIL PROBS TOO.

No need to shout dk. He can't hear you. The thread is 2 years old.

Was your computer made by Tyota?

BBB

What? You think Navigator is pushing the start button when he wants to stop?

He should keep his foot off the gas peddle when typing on his computer.

BBB

If you are using Cracked version of windows....then.

you must have updated it and as a consequence your facing this problem...

now all you can try to do is go to BIOS and change your system Date to the old one (i.e the one before you updated your computer... ) then try to restart your pc..

if it opens then you run WGA remover for Windows Xp /7 / 2003 / 2008 / Vista
( Which are easily available on the internet ) run it and restart it again...

&

if its doesn't opens then there's only one option is left and i.e format your pc again with valid/genuine o/s in case if you don't have genuine o/s then format your pc with cracked version of O/s and when you r finished Formatting please run "WGA remover" ..

gahbless...

There was maybe your hardware problem.

I was faced same issue number of time..At that time i was started my pc in safe mode and get all data transfer into my external drive.. After that, I doing disk clean all internal drive..May be this idea will solve your problem otherwise format only c drive and reinstall windows Xp or any os..
Thanks