rig won't post after evga 970 update

[Kaoss20]

So I hop on, update my driver in gforce experience with the regular update (not beta) and it gives me the option to restart. I do. It restarts. Then I shut it down and press the power button and nothing. No lights, No sweet hum from the purring fans. I had to take out the card and plug dvi into the motherboard and it posts and loads windows.

WTF?!

Thank god for onboard video in this instance!

I'm probably going to roll back the drivers or do full uninstall but wanted to know what you guys thought. Any help appreciated.

parts

MOBO: ASRock Z97 Extreme6 LGA 1150 Intel Z97

CPU: i7 4790k 4.0ghz $329.99

RAM: G.SKILL Ripjaws X Series 16GB (2 x 8GB) 1866

GPU: EVGA 970 SOC 1165 MHz-1317 MHz

SSD: Crucial MX100 256GB SSD

HHD: Western Digital 1TB

CASE: Thermaltake Chaser Series A31


FULL OS: WIN 8.1 FULL

 

[Kaoss20]

So I just plugged into the motherboard and went into control panel and uninstalled everything nvidia. Went right to evga.com/support and installed latest drivers, restart and put vga back in. installed with clean install. All is well on the homefront.