New Comp problems

[Deadlock]

Just gota new computer and it runs ps great, there is only one problem however. In planetside, no matter how low i turn the video settings, there is missing pixels and colors where there shouldnt be... i can see the "polly" lines where the sky is constructed. Also, on my normal desktop there are pixels off color that appear to be "missing"

I set up a brand new version of norton antivirus and its found nothing. The comp has a radon 9800 pro and im using it on a monitor thats atleast 2-3 years old. Could that have something to do with it? Any ideas on how to fix this would be grealy appreciated. Thank you.