Sounds like an issue with the new driver..Install an older driver again.
 
Grab NVIDIA Driver 362.00 and Display Driver Uninstaller (DDU).
 
Run DDU and select the "Safe Mode (Recommended)" Launch option.
 
After your PC restarts in Safe Mode, select the "Clean and restart (Highly Recommended)" option.
 
After your PC restarts normally again, perform a Custom (Advanced) install selecting only to install PhysX along with the Graphics Driver..You can install any of the other optional driver components anytime later.
 
Roll from there.

Try doing #3/#4 listed here to see if it helps resolve your crashing.

So you say it all started when you updated to driver 368.39, huh?..That would make one think that it's certainly a driver issue, or just a coincidence and hardware is suddenly failing/overheating..What's the GPU and CPU temp getting up to anyway?..Some ppl have "claimed" in the past that driver updates/certain drivers have damaged/killed their card..If you remember what driver version you were using before that, uninstall 362.00 with DDU and try it again..You might try a System Restore back to the point prior to when you first installed 368.39 and try that..There does seem to be a lot of problems reported in the Official 368.39 Feedback Thread, but that goes with every driver..Are you getting a BSOD (what code?) or freezing, or restart, or the "Display driver stopped responding and has recovered" message?..You might try forcing the card's fan to 100% with Afterburner..You might try taking the side panel off of your case and pointing a house/room fan into it..You should also say what Mobo and OS you're running..Maybe your PC/coolers/heatsinks needs cleaning inside..More drastically, but not difficult, would be to create another Drive Partition for testing with a fresh OS install on it and a game or two if you have the free space and see what happens..Just a few thoughts here..If all else fails, yeah, contact EVGA Support about an RMA.