Last night, I was playing the campaign in AOE 3, then suddenly my computer froze. I restarted the computer, and instead of it going to the desktop as usual, it goes to a black screen with gray text asking me to boot from CD. When I restarted the computer, I also notice a clicking sound coming near the fan of the computer. Looking at the fan through my casing, I noticed it wasn't moving as fast as it should be. Along with the clicking sound, I heard a faint beeping sound. Anybody know what's causing this?