RE: UP3214Q - no picture after powering off the device / half picture at the login screen
sorry cant be sure, but i presume it was the official nvdvia driver.
i only had the monitor for few days.
i was on the driver prior to that via nvidia auto update nvdivia experience. i got the new monitor was having issues but xmas got it in the way, of few days.
after woulds i restarted thw pc nvidia said update driver i did to the version before mentioned above and the issue disapeared.
i am currently doing a clean install of win8.1 enterprise. I hope I dont run into your issues.
Either way once I have everything installed, I will report back.