Upgraded to Sapphire HD 7950 (from HD 6790) and I cannot start my games or they start in smaller screens

Kuci

Honorable
Apr 12, 2017
41
3
10,535
Pretty much what the title says. Everything looked ok after the upgrade, I downloaded and installed all the drivers for the new card but I cannot play World of Tanks for example - it closes 2 seconds after starting and other games such as The Witcher 3 or Dark souls 3 appear in smaller screen (1/3 of my monitor which is in 1920:1200). I have been reading about similar problems but no solution so far has been helpful. I put the question into graphic cards but I am not sure if this is the problem. I did not have any of these problems before with my old card.
Any tips are appreciated!

my spec: fx 6100, Gigabyte GA-990FXA-UD3, 8 gb of RAM

PS: Darkest Dungeon and Everspace start fullscreen with no problem