The problem I'm having is that after about an hour of my PC being on, everything freezes. The HD indicator LED stays on, and sometimes the CD-ROM drive is accessed. I then have to turn the computer off and leave it for 30-60 mins before being able to use it again, as it will not boot otherwise. I've tried changing the IDE cable but to no avail.
Could it be something to do with the CPU? If so, to what severity?