I have same card as Ctrolz and similar problems. The flickering window seems to be random and usually ends up with windows 7 64 bit going to black screen for a few seconds-then clearing up with a windows message about the video card recovering from a driver problem.I'm using newest driver from nvidia-275.33 I haven't tried to reverting to older drivers yet but will if it gets too bad. Edit:Isboxer also all updated running dx9 also.