I am getting lines and and all sorts of strange visuals while playing games

I am getting lines and and all sorts of strange visuals while playing 'call of duty', 'FEAR', and 'Dead mans hand'.  I played 'Doom' without any problems.  I think my system should be able to play these games fine.  Is this a common problem? Any Solutions?

Processor AMD Athlon 2.2 GHz
512 ram
video card- bfg gforce invidia 6800 128mb ddr agp
Windows XP Pro

tyweed420Asked:
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SteveG00000Commented:
NVidia recomend the following, give this a try

Driver Installation Hints
 
"Download Accelerator" utilities should be disabled when downloading any drivers.

Do not run virus protection software in the background while installing the drivers. This prevents the driver from configuring itself properly.

Before installing new drivers make sure you uninstall all NVIDIA display drivers from the Windows Control Panel. Browse to the Start Menu > Windows Control Panel > Add/Remove Programs and search for "NVIDIA Windows Display Drivers" or "NVIDIA Display Drivers" and select remove.  
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tim_csCommented:
You should really consider buying some more RAM.  Having at least 1 gig might help.  
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SteveG00000Commented:
Try updating Direct X
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CallandorCommented:
nVidia video drivers can vary in terms of artifacts that they introduce - try a different driver.
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tyweed420Author Commented:
I'v tried both updating direct x and multiple drivers? still very bad pictures lines everywhere.
Any other ideas? Does this card work for anyone else out there?

I'm increasing points please help!
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CallandorCommented:
The 6800 is a pretty good card.  Is it overheating?  Open the case and point a fan at it and see if that makes a difference.
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WatzmanCommented:
My honest opinion is that the most likely cause of your problems is a hardware defective video card.  I'd try a different video card if that is an option.  I'm not saying that the model of card that you have is bad, I'm saying that YOUR card is possibly bad.
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Justin CollinsIT Support TechnicianCommented:
You could try turning some of the eye candy down in the games.  See if that helps.  Maybe your overloading your vid. card.
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