Change your current power plan and see if it helps. Open the Control Panel and go to Hardware and Sound > Power Options. Now, select another available power plan. You can also create a new custom ...
I just put together an Athlon XP 1800+ with an ABIT KD7 and it reports the CPU temperature in the BIOS at 160°F. It starts out at 140° at a cold boot when powering on and rises to 160. I know this ...
Even a 360mm AIO won't always keep your CPU cool ...