Bad computer memory is one of the three main reasons for random system failures.. the other two are heat (usually caused by fans or heatsinks being blocked with dust) or power issues...
first...unplug case from the wall...open it up and clean out all the dust bunnies...be sure to clean the cpu heatsink fins up real good.....guide is here
then lets make sure its not your memory going bad...get memtest + here
the lowdown is here
if you have a floppy drive you can get the 6th one down ...set the bios to boot from the floppy drive A:
first...then the cd drive then the Hard drive C:
or you can get the 2nd one down and burn the ISO file to a cd and then boot it from the cd drive...
if you don't have a burning program that will burn .ISO files go here
and get burncdcc ..a small FAST no frills iso burning program... NOTE...do not put a blank cd in until burncdcc opens the tray for you
1. click on BurnCDCC.exe
2. Browse to the ISO file you want to burn on cd/dvd ....in this case its memtest86.iso
3. Select the ISO file
4. click on Start
make sure in the bios the cd drive is the first boot device....put the cd in the cd drive..boot your computer....
let memtest run for at least 2 hours.
..if it starts showing any
errors during that time then you will have to replace the RAM...no errors after 2 hours just press Esc
to end the tests and we will try some other tests
and get everest home...install and launch it...click the +
by computer...click on sensor
...get a screenshot and post it so I can check your temps and voltages...