So ever since I installed Windows 8.1 on my desktop, i've been having a ton of trouble, from it doing a boot loop, to now, where it jumps randomly to 100% disk usage while i just idle on the desktop, to the point my PC locks up and needs a hard reset. The lock ups are almost ALWAYS accompanied with a very odd noise, a clicking. A random, loud click once every few seconds, then it goes away. I'm unsure if this issue has something to do with my HDD but i'm worried that it is.