Win98 SE problems

[Cable]

i leave my computer on doing a task say cracking rc5, and when i come back to the computer after a while of time the computer screen is blank, and it is frozen. how do i rid myself of this problem? this has happend to me on a clean install. if you can tell me anything that can help the system to not hiccup i would be greatly appreciated. thanks. specs:

533@740
pc133crucial 128mbx2
20.5 7200 ata/66 ibm hdd
asus gforce ddr 6800
please help me!

 

[Ulysses]

Mix and match the following, among other things:

Increase the voltage ( not over 15% )

Increase your BIOS CAS/RAS settings

Reduce the FSB

 

[tom3]

Just a wild guess here, but could it be possible that your computer goes into sleep mode??

if not.. try the above suggestions..