February 2015
So when I first started playing bf4 3days ago on this computer I could full screen the game at 3840 x 2160 but as of yesterday I could only play in window mode anytime I try to switch it to full screen it just goes black and the cursor starts to flash I have tried looking for solutions already so maybe someone has a idea that I havent tried
Solutions that did not work:
1. Disable Team Viewer (Don't have team viewer so thats not the problem)
2. Disable Samsung magician (I do have that and have closed out the program completely and stopped the process's but it still did not work)
3. go into nivida control panel/display/Adujust desktop size/scaling/fullscreen and check the override the scaling mode set by programs)
4.Deleting the battlefield 4 documents folder and repairing the game
4.Restarting the computer.....................................
5. redownloading the BF battlelog plugin
6.Driver are up to date.
but also to note i Just built a MINI ITX build so everything is a fresh install and BF4 is the only thing I have put on this computer my specs are
asus maximus impant VII
Asus GTX 970 4G
16gb ram
512GB Samsung pro SSD
my monitor is - Samsung UHD 4k 28"
February 2015
Exact same problem.
Forums say teamviewer is the problem but I don't even have it!
June 2015
I've tried reinstalling the game, updating punkbuster and everything else. I don't have teamviewer either. It's only been happening for a week or so...