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Random computer lockups followed by screen flashing- what could this be?

Tags:
  • Asus
  • EVGA
  • Computers
  • Graphics Cards
  • Systems
Last response: in Systems
August 1, 2013 9:57:56 AM

Hi guys.

Not sure if this is the right section to post in- if not I apologize.

I've been having trouble with my computer on and off for quite a while, but never got around to fixing it. Was overseas for over a year, came back, just now deciding to try to finally fix it.

Here are photos of the two freezes from this morning:

* http://i.imgur.com/oFxLsfs.jpg
* http://i.imgur.com/5dXm0Dm.jpg

First was after booting, second was in-game League of Legends, after about 5 minutes. Everything stopped, screen flickered, then came back up as that. The bottom half of the screen was flashing every color possible. Never stopped flashing and kept going as long as I left it there.

In the past I recall having issues in games of Starcraft where the entire screen would turn green and make bars out of everything, and looked like the Matrix.


**Computer Specs:**

* Fresh Windows 7 insallation on new Seagate HD.
* EVGA Nvidea GeForce 9800 GX2
* 2x 4GB DDR3 RAM
* ASUS P5E3 Deluxe/WiFi-AP@n Motherboard
* Intel Core 2 Duo 3.16 Ghz

I just replaced the heatsink on the processor as it was overheating. Temps were around 92C before replacing and after reseating and cleaning it hovers around 40C. All other temperatures looked normal. Video card(s) were hovering at around 70C, 78C under use. High, but not overheating yet.

Gonna head off today and try to find a backup monitor to use, then test with integrated video, then find a way to swap out RAM. Don't really have any other DDR3 so that would be the more difficult test. Posting here to see if anyone recognizes the issue and can save me some time.

Thanks for all your help dudes.

More about : random computer lockups screen flashing

a b U Graphics card
August 1, 2013 11:13:12 AM

That looks like your 9800X2 is about to go. How old is the card? It has got to be getting up there in service years. You need another card to isolate or eliminate that as the potential problem.
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August 1, 2013 3:02:47 PM

tinmann said:
That looks like your 9800X2 is about to go. How old is the card? It has got to be getting up there in service years. You need another card to isolate or eliminate that as the potential problem.


Well, I just did some digging around in Newegg, and it turns out I purchased this entire system in 2008. Doesn't sound bad until I realize that is 5 years ago. :ouch: 

Maybe it's just time to upgrade again. I wish I could more easily isolate the parts and figure out exactly which is causing the issue. I have another few video cards in my house, but unfortunately none of them will work with my motherboard. Can't really easily replace the RAM (don't have more DDR3 around), motherboard, or processor. It's not really in my budget to replace an entire system, so I have to do it part by part.

I've had people tell me that the PSU could be a culprit, but I have a new Corsair 850W after my first one blew out a few years back.
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