recently i was starting to have video troubles with l4d so i downloaded the newest NVIDIA display adapters. Then once i restarted my computer it went into this self check mode so once that was all over i tried playing l4d again and i was having massive amounts of lagg, the flashlight would appear as a bright white box, the single player menu would just dissappear altogether whenever you clicked on it, and all the sound would just come out as a loud screech...
is there anyway to fix this?....
is there anyway to fix this?....





















