Hey everyone, I've had my R4 for just under a year and it's been awesome. I took out the stock card right away and replaced it with my own GTX 560Ti and everything has been running great. I recently picked up a GTX 670 Windforce from Gigabyte, but when I put it in and tried to log in the screen stays black and won't go any further. I switched back to the 560Ti and have the same issue now. I'm able to log in using safe mode on the 560 and 670, removed all the old drivers and installed the new one, but still no luck. Any ideas?