my couseine always encounter this problem,and i want to know what causes it and how to fix it,she always encounters this with xp startup.after a day of use of her computer just CHATTING,the nextday she cannot boot her PC normally.what happens is the xp loading screen appears but after loading it just restart back.and continously happens.i dont know how to properly fix this so i format her pc and the computer runs normally,but after a few WEEKS this problem occurs again.and i also format it to fix it.is there a proper way to fix this problem.because sometimes i encounter the same problem.Can you log into the computer in Safe Mode?

If you have the Windows XP CD, perform a Repair Install:
http://www.michaelstevenstech.com/XPrepairinstall.htmThis sounds like the same problem I've got, only mines more complicated, I'd run PC Health over it alongside your normal antivirus and download ad-aware. hope this helps....sometimes i can run safe mode,but sometimes not,it just restartsWhen was the LAST time you blew the dust out of the computer with a can of COMPRESSED air?

Download speedfan and post back with the temps
http://www.almico.com/sfdownload.phpit happened again  same problem.computer restarts after xp loading is done, what do i do now