I recently bought a gtx 570 twin frozr III. However I sent it in for a RMA due to artifacting and crashing. Now during startup there are checkerboard patterns and purple/red lines with an occasional BSOD. Multiple restarts are required before I am able to boot into the windows screen. The graphics card does not seem to have any problems and is fine when i play games (although it sometimes crashes and says "nvidia driver has stopped working and recovered...") Any solutions to this problem?