Around the holidays, I applied the latest BIOS update for my motherboard, an Asus P7X79 WS.
The last week or so my folding production had fallen off almost 20%, so today I decided to apply windows updates, and reboot. At the time I was preparing to reboot, I noticed that the temperature LED indicator on the waterblock/pump (Corsair H80i) was a bright yellow. Usually, It's blue.
So I first did a "restart" because that causes a complete system kernel restart in Windows 8.1. When the board posted, a message came up saying that there was a CPU overheat problem. But it was still running, and the LED was still only yellow, not red. So the PC booted into Windows, then I decided to do a complete shutdown and cold restart to give the CPU, motherboard, PSU, and fans a chance to start cold.
No problems, and no messages this time. The system booted into windows, and the temps reported by CorsairLink2 (the monitoring software that comes with the H80i) started up in the high-70s but fell over time and now reports a CPU temp of 58 C. But I'm not running folding at the moment; I'm a bit afraid to start it up. The LED on the waterblock is now an alternating dim and bright orange.
The Asus monitoring software now reports 49.0 C for CPU temp.
Question: Back around the holidays I put on the latest BIOS for this motherboard. Is it possible that the new BIOS could have mucked something up with regards to the BIOS and/or motherboard's own internal monitoring?
Additional: Folding drives CPU temp up to 91c for CPU according to CorsairLink, but only 68c according to the Asus monitor.