Okay, update:
Now it works.
I changed my compatibility settings to Windows 7(Had it set on XP service pack 2), Made it use color depth 16bit, and made it run as adminstrator. And I switched these settings for all users, and I restarted my computer.
I do not know which of these was the thing that made it work, but if I were to hazard a guess, it would be the compatibility for windows 7.
If the problem returns, I'll be back, but so far it seems to be working fine.
