I noticed you listed your video card as a GeForce GTX 570. That wouldn't happen to be an MSI built card would it?

Just asking because I have the same issues with an MSI N570GTX. My solution to fix it was to shutdown my PC, pull the power cord out of the back, and wait 30 seconds before plugging it back in. Usually this would fix everything for at least a couple days, then I would have to repeat the process again.