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I didn't really know which forum to put this in, but here it is.

Recently my computer started having problems rendering some of the 3d games
that used to run just fine. In some games the textrues would be discolored o
r corrupted (Guild Wars) and in other games the primary problem was that som
e of the polygons were grossly distended filling half the screen but still a
nchored within the game universe(Prince of Persia:Warrior Within). For regul
ar desktop applications, the computer seems to run fine. The errors for the
3D games, seem to accumulate over time. The first ten seconds of gameplay ar
e alright, but as time progresses, the game becomes unplayable before five m
inutes is up.

So, suspecting that my video card might be malfunctioning, I open up the case and take a look at
the scenerio. The only thing that I notice which is amis is that fan that covers the motherboard
chipset no longer runs. I don't know the exact function of the chipset on the motherboard so I am wondering
if (due to a malfunctioning fan) weather it is possible for
an overheating or burnt out motherboard chip to be responsible for my graphics corruption?

If it isn't the motherboard/chipset am I safe in assuming that something has
gone wrong with my graphics card?

Motherboard: ABit NF7S v.2
Graphics card: Radeon 9800 Pro
CPU: AMD 2800+
Motherboard chipset: nForce2 Ultra 400