Random Computer crashes

[jgcable]

I tried swapping the video card and the sound card. It still crashes randomly but I think I might have figured it out. I tried removing all the RAM and just leaving 1 stick in. It crashed like crazy. I removed the 256meg stick and swapped it out for one that I am pretty sure is good. No crashes so far but it loads a little slower now. I then tried putting in other sticks and it started crashing randomly again. I think its the RAM. I must only have 1 good 256meg stick out of the 4.
Anybody know where I can get some cheap RAM? The sticks say:
D266 REG
ECC 256M
M-256/266-SAMER

Thanks guys!!

[jgcable]

Well, I no longer think its the Ram because it crashed again.
Let me be more specific when I say crashed.
What happens is... the computer screen goes black and the green light on it starts to flash (which is exactly the same as when its hibernating).
The harddrive light stays on and I have to hit the reset button to get the computer rebooted. It reboots fine with no errors flashing at all.
This could happen at anytime. Sometimes hours, sometimes minutes before it will reboot. It seems I can stay on the JCF all night and it won't crap out but if I search Ebay it will almost always go black eventually.

[charvelguy]

Maybe it doesn't want you to buy another computer on eBay.

You had a power supply replaced recently...and this has been suspect of a memory error...my guess... I'd say a possible backplane issue. Is your power supply the same as before?.. is it supplying the correct voltages to the backplane? Is it grounded properly? Pins ok in the backplane? (not bent or broken), Is the backplane seated proper?
It could be a bad slot as well... seeing this went up in smoke.. things could have gotten hot and caused a random short in other areas. When more power is drawn..issues happen. Just speculation tho. If you haven't tested those voltages to the backplane to see if they are in tolerance, you maybe should consider it.

Not sure if an error code would come up in the Cmos for a backplane problem.

Were you able to run a hardware diagnostics test?

[jgcable]

Maybe it doesn't want you to buy another computer on eBay.

You had a power supply replaced recently...and this has been suspect of a memory error...my guess... I'd say a possible backplane issue. Is your power supply the same as before?.. is it supplying the correct voltages to the backplane? Is it grounded properly? Pins ok in the backplane? (not bent or broken), Is the backplane seated proper?
It could be a bad slot as well... seeing this went up in smoke.. things could have gotten hot and caused a random short in other areas. When more power is drawn..issues happen. Just speculation tho. If you haven't tested those voltages to the backplane to see if they are in tolerance, you maybe should consider it.

Not sure if an error code would come up in the Cmos for a backplane problem.

Were you able to run a hardware diagnostics test?

Yes, all the tests passed. I couldn't figure out how to run memtest though. It prompted me to make a floppy and reboot.. which I did. When the computer reboots it askes me to remove the non-system disk and hit any key.
I am thinking that maybe when the power supply when up in smoke it did something to the MB.

[charvelguy]

well, one stick of 256 would be a fairly cheap test.