Computer goes to black screen and reboots

[Guest]

One of my desktops, running XP Pro, all updates except SP2, will occasionally
go to a black screen and reboots. I used Microsofts RAM checker to check two
sticks of Kingston ValueRam, each 512M without error indications. Used
MemTest86, and it found errors on one stick. New stick on the way from
Kingston.

HOWEVER, the computer just did it again with the "good" stick. Should I
suspect the motherboard? Processor is a P4, 2.4, 533. Gigabyte motherboard,
GA-8PE800 Ultra, onboard RAID1, 845PE chipset.

Thanks.

 

[Rich Barry]

Did you try rt clicking MyComputer>select Properties>Advanced>Startup
and Recovery-Settings>Uncheck the Automatically Restart Box.