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BFG 8600 GT OC white dotted lines flashing on screen

post #1 of 18
Thread Starter 
Hello,

I am currently having a problem with my BFG 8600 GT OC 256 MB card...
The problem is this: I will randomly get flashing white dotted lines all over the screen as well as some color "plasma" thingy going horizontally across the screen. This effect is quite random and cannot be captured on a screenshot.
This is usually triggered in WoW after awhile... can't really pinpoint a certain spell/effect that triggers this. But after I quit WoW, the problem persists and requires a reboot to clear. I have tried messing around with the settings, and I noticed that the game is safe for a longer period of time with anisotropic filtering to the lowest/off. That is not to say that it is completely free of the problem. If anybody has similar problems or know the reason why this is happening, it would be greatly appreciated.

SPEC:
CPU - P4 2.6GHz
Power Supply - 350 W (not SLI compatible but I'm not running SLI)
MOBO - Asus P4VM890
GPU - BFG 8600 GT OC 256 MB
1GB ram (clocked at 333Mhz)
BenQ LCD screen (if you think that's the problem)

EDIT: Signature system is my other computer...
Sashinator
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Sashinator
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post #2 of 18
Suggestions:

1) Lower the overclock (if any) on the card.
2) Make sure the card isn't overheating.

It sounds to me like its either overheating or being overworked (WoW though?), or a driver is starting to go bad.
R'lyeh
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R'lyeh
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post #3 of 18
1) Driver issue - uninstall current driver, use Driver Cleaner Pro 1.5, and install newest driver.
2) Bad PSU - what brand? Being just 350w is not enough. It needs to be stable as well.
3) Heat or Unstable OC - check temps and lower clocks. RMA if it gets better at lower speeds.
4) Bad Video Card Memory - run some testing with 3DMark06, ATITool, and other games. If it occurs as well, RMA.
Once again...
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post #4 of 18
Sounds like overheating. If you are brave enough, remove the HSF on the card and clean the base of the HSF and the GPU die with 99% Isopropyl alcohol. Allow to dry then smear a small blob of Arctic Silver 5 accross the die so that it is fully coated (I suggest a finger inside a sandwhich bag to do the spreading!)

Reinstall the HSF and check temperatures.

If you have a passive Heatsink on your GPU then I suggest mounting a fan on i to assist in heat transfer from the HS to the air.
    
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post #5 of 18
is it like a checkard board? If so your card is giving out on you. Try disabling Vsync, i noticed that random stuff happened w/ that enabled some times. Stuff that looks like artifacts but isnt appears.
Unto The Void
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Unto The Void
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post #6 of 18
Thread Starter 
Thanks for the replies guys. I'll do some tests with heat/power supply and see if I come up with anything. If you guys got anymore input it would be greatly appreciated!
Sashinator
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Sashinator
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post #7 of 18
did you solve this problem.
i got same card and exact same problem , flickering little lines and color patches flashing randomly on some games, i have to restart to solve this.
not sli, but using 600w 3rail psu, exhaust fan on pci slot blowing in on card. still playing up. i dont play WoW so you can rule out that game as the problem.

im thinking its due to BFG not using directpower connector to card. all there 8600gt rivals do (i.e you need a PSU with a pci-e connector).
post #8 of 18
Thread Starter 
Yes, I did many testings and I attribute it to bad video card memory... Got it switched up, it runs fine now. Hope this helps.
Sashinator
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Sashinator
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post #9 of 18
I am having the very same problem with the exact same card bfg 8600 gt oc Still struggling with it. what program did you use to test your card? did you have bfg replace the ram? if so how much did it cost?
post #10 of 18
I think its a heat issue man.
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