Pc suddenly less capable

So on my desktop I used to play a lot of games, and I could usually run games like Skyrim, rainbow six siege, etc. at ultra high, but I stopped playing for about 5 weeks when I came back to it, I could barely run any game on low settings. Anybody have any idea on what’s gone wrong? I’ve had the pc for about 2,5 years at this point. Sorry if this is all very vague, not really a tech guru, as you can tell.

I’m grateful for any help that you’ll provide.

Submitted December 31, 2017 at 11:52PM by brb-feeling-feels http://ift.tt/2zVXa5i