OK, some people may remember me posting this before but it looks like that even with the extra fans things aren't going well for my Fujitsu-Siemens Scaleo T PC with an Intel Prescott P4 3.2Ghz Processor. Basically, when I now start it up the sounds like a Grinding noise in the back of the PC until some sort of Fan kicks in, but not before some sort of other cooling system at the back kicks in. This is not before the CPU temperature goes up to about 70 Degrees C or so, a temperature that is definitely not stable I strongly suspect that there is either something wrong with the heatsink or thermal pad connected to the CPU, but since I am unskilled in removing huge fans and Heatsinks (I'm skilled at most other hardware moving in the PC such as memory, expansion slots etc) is it best to hand the machine over to PC World or is there a better UK party to contact, as I'm not sure if I 100% trust PC world mechanics to necessarily do a better job One other thing, could the power supply be the problem? as when I start it up in bios the supply is running at 11v, should it be running near 10v? Would plugging the PC into a non-extentioned powersocket help to check that problem? thanks for any help in advance. Just thought I'd mention that I've had this PC for about 2 years now, and I haven't made any changes to it that would effect the CPU apart from adding memory, after the CPU had started showing these symptons.