I have a gtx 970 Pny with latest firmware 84.04.84.00.A4 With a philips monitor dvi to dvi all is ok. Now i bought a new monitor AOC E2275swj. 1920x1080 60 hz Dvi to Dvi : If i start my machine with monitor plugged in (uefi mode) pc beeps 3 times and qontinues to post but monitor stays in standbye mode until the login of windows. If i disable uefi and start up machine in combatibility mode monitor start ups but in login screen the windows have 1024x800 resolution and in device manager i see non pnp monitor. If i choose hdmi to hdmi all works ok. I found in internet that aoc monitors have problem with dvi and display port with all the gtx970 Here is a video where with and aoc problem: Hdmi works ok and displayport to displayport have a 3 beep https://www.youtube.com/watch?v=7T4Pv9-snBE with zotac 970. It is posible from manuel to take a look?