I just overcame a situation that I deemed unusual...took me most of the day to figure out what was going on.
I dual-boot, XP and Win 7, on a Asus M5A78L-M LX-Plus board, with an AMD FX-8120 and 8GB RAM. No problems at all with those components prior to today.
This morning I noted that the CPU fan was getting louder and checked the CPU temp per Speccy (in XP). The norm is low 30s, with the board registering low 50s. When check today, the CPU was low 50s, the board was mid-60s, and the fan was obnoxiously loud.
Normally, I would think "overheating" but I had just replaced the heatsink/fan with a new spare from a FX8320 CPU I haven't installed in anything...that was last week. So, for purposes of comparison, I booted into my Win 7 half...no problem at all there, fan quiet, temps where they should be.
So, I began tinkering. Throughout the day, I tried to satisfy myself that it could not be malware, could not be hardware...had to be my XP install somehow gone bad.
Checked temps again in Win 7...20 Celsius for idle, 35 for board....while XP reflected 52 Celsius for CPU and 65 for board.
Last guess was board drivers. I reinstalled those (chipset, VGA, and EPU-4) from the mobo disk...and all is back as it should be.
This may tempt me to not be so quick to diagnose system overheating as the problem...when it's really only a symptom of the problem . The time and frustration were well-spent, IMO, because I came to grips with a situation where the obvious was not what it appeared to be .
Edited by hamluis, 30 May 2014 - 04:50 PM.