Remove the side cove of the desktop and point a fan at the machine. Better, same or worse?
Good find on the HDD but it could be heat induced. And of course there are malware and rootkits as well but if you follow this forum you know Grif's advice.
So not so long ago, I was sitting playing some LoL, when all of the sudden my computer start lagging very bad, and some in-game sounds got bugged. So I tried to ignore it for a while, didn't help. I also installed Windows 8 on my machine afterwards, which did not help. I've tried it all, re-installing drivers, operating system, and many other things but none of it seems to work. So I was investigating the problem and I found out that my harddrive sometimes would just get a random delay time of 6000ms... So that may be the problem right?, get a new harddrive and it's all good, right? Not quite, you see one of my friends have an almost identical computer(Spec. wise, same cabinet and company too), and that didn't really seem to help him at all. It should be notet that he have the same problem as me. So could there be multiple reasons my computer is stuttering, or is it bad drivers? It just seems odd that it just all of the sudden happened. Anyways thanks for the help in advantage.