dxgkrnal.sys and nvlddmkm.sys crashes

[xmop1]

I'm in the midst of finals week and keep getting dxgkrnal.sys, dxgmms1.sys, and nvlddmkm.sys errors. This is causing my screen to periodically go black and system to freeze. Occasionally I'll get a blue screen.

EVGA suggests that it's caused by a conflict between the video card on board HD audio drivers and the systems audio drivers. I tried following their troubleshooting steps (EVGA FAQ Help Center) but it didn't do a thing.

Help!!

System Specs:

Windows 7 Professional x64
Intel Core i7-950 Bloomfield Quadcord @ 3.07GHz
EVGA Nvidia GeForce GTX 470SC
G.Skill Ripjaws 3 x 4GB DDR3 1333
Corsair CMPSU-750TX 750W
WD Caviar Black 1TB 7200RPM 6.0Gb/s
Crucial RealSSD C300 64GB​

 

[xmop1]

I've updated all drivers, ran extensive memory tests (no errors), re-installed windows, tried higher power supply (850W), and have been to hell and back with the issues not going away.

I tried using a NVIDIA GTX560ti and the system works fine. But once I put the GTX470 back in, I get the same errors.