I was messing around with Skyrimprefs and changed the resolution values to lower ones because i wanted to make it widescreen. Things didn't went the way i wanted, so i used my old Skyrimprefs backup. However, when i started the game again the main menu and the in-game menu weren't in the right position. Both were " cut " by the screen, like if my screen was split or something. Anyway, i also reinstalled Skyrim and it didn't changed anything. I also ran other games to make sure that the problem isn't my computer. The game runs normally, but i can't see the inventory or my health bar because they were cutted by the screen. I have screenshots of this problem, but i don't know how to post it here.