My personal PC, Compaq Presario 061, Intel Celeron CPU 2.80GHz, Windows XP w/SP2, 521 MB Ram, 112 GB Hard disks, 70 GB free; it sounds like the fan is running more often than not… I got behind the CPU and the fan is indeed running and blowing; however, I have been told that this may signal my hard drive going. All tests indicate the hard drive is operating fine; however, when the fans is running, everything moves in slow motion if at all until the fan stops. Task manager will show CPU at 100% usage and something called ccAPP.exe seems to hog the memory. What can I do about this to determine if indeed my hard drive is going or there is some simple solution? How do I know what each of these tasks is and if they are necessary? I have recently installed Norton 360 and IE 7.0. After getting the same error message each time I close 7.0, I checked Microsoft to see if there was a problem reported or a way to fix…a few different email threads tied 7.0, Norton and the fan. When the fan isn’t running, the PC works great with multiple applications running. Any suggestions would be helpful. I also just installed a Belkin wireless router and have had zero problems with it. I’d be interested in upgrading my hard drive; however, can anyone recommend a book that will teach me about maintenance and installing components?