A friend of mine's eMachines went south the other day. I tested the power supply: it was shot. Installed one of my spares, the power light on the mobo lit, but the on/off switch had no effect. Tested everything one at a time, and it came down to mobo or processor. I installed an MSI I knew was good, replaced her RAM with a known good stick of mine, and fired it up. Here's the problem: it POSTs, Windows loads, all is fine for say, a minute. Then the fan on the heatsink steps down, then steps down again, then shuts completely off, but the processor is still sending a signal, as the Windows activation page stays loaded and is active. Tried this three times, changed all processor settings in the BIOS (fail-safe defaults, optimum defaults. etc.) all with no change. I told her the processor probably went along with the PSU, but I'm hoping an expert can shed some light, as I always thought the thermal protection would shut down the hsf AND the processor. Any help??