What should I do to help cpu not to go to 100%? sometimes when it peak to 100%, the pc hangs and could not move that I have to wait long and sometimes I have to restart the pc. I already have tuneup utilities 2011 installed, and even turn on the Turbo mode but still it could goes to 100% cpu cycle. What should I do? PC still - Pentium 4 2.4Ghz, Windows XP SP3 with 256 Ram memory.