Overheart or something else? (8800GTX)

[Xion]

Hi all, had this problem twice now one day after the other, and i guess it seems to happen when i've been playing for quite a few hours, which leads me to think its maybe a heat issue...

This is during the game Lord of the Rings online, after many hours of play, suddenly the screen frooze, and had a weird big triangle on the screen, which displays lots of lines etc which would go crazy when i moved the mouse, so i could tell its some sort of graphical issue.

Build is only a month old or so, hasn't happened much before. The first time it happened, i had to restart the pc, and it frooze on the desktop i think, so had to restart again and it was fine. hasn't happened more than those 2 times so far.

Build:

Gigabyte 3D Aurora 570 Black No PSU
Zalman CNPS9700-LED CPU Cooler
Corsair HX 620W ATX2.2 Modular SLI Compliant PSU
Intel Core 2 Quad Pro Q6600
BFG GeForce 8800 GTX OC2 768MB GDDR3
Asus P5N-T Deluxe nForce 780i (Socket 775) PCI-Express DDR2 Motherboard

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Also i do have the problem with the mobo, the PCIe slot closest to the mobo dosen't work, i'm hoping there isn't anything else wrong with the mobo which may be causing this. The CPU hasn't been overclocked yet either.

The Nvidia drivers i am using are: 7.15.11.6928

Any help/tips would be helpfull Thanks in advance.

 

[Xion]

Hmmm can't seem to find any logs in Event veiwer which could help ><

 

[J.D]

Have you: Updated the motherboards BIOS, changed graphic drivers or overclocked the 8800GT?.

 

[Xion]

I have not overclocked the 8800GT, i am going to try updating the motherboard BIOS when i get home, The Nvidia drivers i am using are: 7.15.11.6928. haven't had the problem again yet luckily.