hello all, I have a problem with my system. I have AMD FX55 processor, asus a8n-sli mobo 1 gig dual channel mushkin level 2 black ram (400mhz pc3200) and 2 BFG 6800gt overclocked running SLI. when i try to play games i get this squiggly green line in the middle of the screen and 2 lines on the left of the screen going up and down that do not move. any indication on what this is and why it does this? please help.