Forum:Halp plz

Ok, so, one time i was goin in a game, and then i realized it was going slower than normal. i tried to ctrl+alt+del to see if i had anything other than borderlands and rocketdock open. i tried going back to borderlands, but it wasnt responding so i ended it from the task manager, nothing i havent done from any other game. i go back into borderlands, start it again, and it now says it has to end because of a problem. ive un and re installed it. and it didnt work. so, i ask again, halp plz?