I have no clue where to go from here. My tech buddies and I have tried every physical thing to my machine and nothing has worked. We tried swapping out the graphics card and the ram; no change. We tried ethernet over wifi and still nothing. We thought it was a heating issue, but as that was fixed to, the glitched images still happened. I think certain sites are conflicting with my computer and it doesn't have the software it needs to correct this. My specs are: Itel Core Duo x2 E8400@3.00 4gb ram windows 7 professional x64 Nvidia GF asus EN210 Silent 1gb PS: I've tried re-installing steam and nope. These artifacts do not happen anywhere else on my computer. However, the computer is refurbished. The Attached files are the images I speak of.