xp keeps rebooting

[Simon]

I have 2 pc's at home both running xp, recenlty one of the
pc's has decided to start rebooting giving error messages
about hard drive consistency check. After much trouble
shooting I decided to get a new hard disk. The hard disk
is installed and running fine. Now again I get my pc
constantly rebooting every 20 minutes or so. I can boot
the pc in safe mode and occasionally the pc will reboot
normally. What I have observed is that if I turn off the
pc for a few hours and then start it up again everything
will run fine, give it a couple more hours and then the pc
starts rebooting again and I am constantly going through
this all the time, any ideas.

Simon

 

[luminos]

I have 2 pc's at home both running xp, recenlty one of the
pc's has decided to start rebooting giving error messages
about hard drive consistency check. After much trouble
shooting I decided to get a new hard disk. The hard disk
is installed and running fine. Now again I get my pc
constantly rebooting every 20 minutes or so. I can boot
the pc in safe mode and occasionally the pc will reboot
normally. What I have observed is that if I turn off the
pc for a few hours and then start it up again everything
will run fine, give it a couple more hours and then the pc
starts rebooting again and I am constantly going through
this all the time, any ideas.

Simon

Perhaps your memory (RAM) is only working with marginal reliability.

 

[Guest]

if the system does run fine after it is shut down for a while, it has to do with the system gettting overheated, try keeping the tower open and try to keep it cool, also try disabling the option 'Automatically Restart' located under Start-->Run->SYSDM.CPL->Advanced->Startup and Recovery->Settings.

 

[MrB]

I don't know how much of this thread is missing but this sounds like a heat
problem. If it hasn't already been suggested, are all fans working ok? No
dust?