Ever since the last major upgrade I have piss poor frame rates and get discoed like crazy.  Windows crash and burn site is no help, just says a driver caused it, but doesn't know which.  I have updated my Realtec AC97 drivers (sound) and my NVIDIA GeForce FX 5200 drivers.  In task mgr I shut down everything I safely can, but I must have a dozen instances of svchost.exe!  Which of these are safe to shut down?  Some will cause the system to reset.  HELP!