I just re-installed my windows. I had a lot of junk and viruses i needed to get rid of anyways, and that brightness problem too. And no, this problem was ONLY occurring in pvkii. So that fixed everything haha, thanks for the help though!
Everyone keeps saying that pvkii's community is dying right now, but is it really? The game is very addictive, (In my opinion heh) + It's free. The game just has to be published somewhere. Like someone should make an add for it on a popular site!