Well, this PC was normally fine like a year or two ago, but it became extremely slow, it can handle some games, but most just lag out on low settings. I used to play Max payne 3 high settings 50+ FPS, now it can barely run 23 FPS on low settings. I could also play BF4 normal settings 60 FPS and all, but now, it barely keeps it alive on 20 FPS. Specs: Windows 7, Intel core i5 CPU 750 2.67GHz, 8.0GB of RAM, AMD Radeon HD 5800 Series. I asked some friends, they told me I could blow off the dust on it, some even asked if it was overheating, which it wasn't, the Case itself feels cold to the touch when I touch it, so overheating is out of the question, I thought about blowing the dust off with a can of compressed air, I scanned several times my PC for any viruses with various anti virus, and nothing came up, I used CCleaner to clean up my PC, but still can't speed up. And I also want to say that all my games are stored on a Drive over than :C. So that may cause problems, but I always installed games on that drive, so It can't be damaged or anything. I have an other PC which has lower specs than this one, but it still runs better than this one. I was thinking if I could replace the Hardware from my other PC to see if this is a Software problem or a hardware problem. Sorry for the wall of text, but I really want to play lag free again like the old days.