Whenever I Minimize Or Close Any Program It Goes In Slow Motion?

The problem I currently have is whenever I open close minimize or maximize a program, be it google chrome or World of Warcraft or even any MS Office program it starts slowly and minimizes slowly. I've been having this problem for about 5 days now and I have no clue how it arose. I am using Windows 7 x64 home premium. I am new to computer stuff with little knowledge of the lingo and processes of how anything really works.Also I found on these forums something that seemed familiar but there was no solution. Whenever I play Starcraft 2 It becomes choppy and slow moving. The start up screen for every game I play is in slowmotion.

I would like to add that browsing the internet and playing some games is perfectly fine after the initial slow moving start up. though it still closes and minimizes slowly.Another thing I would like to add that may be the cause to the problem. Whenever I start up my computer it is super slow. it takes the windows in starting or resuming icon forever to rotate and load.also after the 5-10 minutes I have to wait for it to finally get to the User selection screen. when i do select a user, the program Curse Client ( a program for World of Warcraft addons) doesn't work and gives me this message: An error has occurred while attempting to load a Microsoft .Net configuration file. this is often and indication of a corrupted .net installation. and it goes on to say; We recommend visiting Microsoft download Center to repair your .net installation. would you like to go there now?