After 24 months my computer died with a whimper. I assembled Intel 2.8 GHz CPU (Hyper Threading) on Intel 865GBF Mobo with 512MB RAM and 80GB SATA drive. Intel box CPU was used with original heat sink & fan. The cabinet was "Thermally Advantageous" type with two exhaust fans in the rear. There was no fan in the front. From day one I experienced problems with system-1 temperature exceeding 50C. This happened even while word processing and internet browsing. It is very hot and dusty where I live. Room temperatures in summer hover above 30C. Alarm was set to beep whenever system-1 temperature exceeds 50C. The CPU tempetature limit was set to 65C but it never exceeded the limit except while playing games. System-1 temperature was always a problem. Recently, while installing some software I ignored the temperature alarm and rebooted twice. On third reboot the system just went dead. Now when I press the power button nothing happens just a blank display and the fans remain off. Even the power supply fan doesn't start. I opened the cabinet and found that a single LED on mobo lights up when I press the power button. I suspect burn out of either power supply or mobo or CPU. There was lot of dust which I cleaned. Any suggestions on this problem? Did the CPU belong to the dreaded Prescot family? CPU: Intel 2.8 GHz; HT Mobo: Intel DB865GBF

The P4 is thermally protected...it is almost impossible to overheat one to death. Besides, those temps (50-65C) are no where near being dangerous. Since your fans aren't spinning, I would suspect the power supply.

Thanks Jam. Actually the PSU was dead. When I attempted to reboot with a new PSU a component on the HDD (80GB SATA) circuit blew out. I am unable to correlate how this could have happened. After replacing the HDD and cleaning the heat sink my CPU & system-1 temperatures are now lower by about 10C. I just cleaned the heat sink and applied some ordinary (no-name) thermal paste. CPU: Intel 2.8 GHz; HT Mobo: Intel DB865GBF