I have a desktop computer that revs the fan up whenever anything is happening on screen, including simply moving the mouse. If it's sitting idle the fan spins at the normal rate, but any activity and it sounds like it's getting ready for takeoff.
First thought was overheating. The CPU (dual core) temps were reading a steady low to mid 30's C, but I went ahead and cleaned the heatsink and processor and reapplied the thermal paste. Started it up again and it's no different, though the temperatures are reading slightly lower than before. This is with speedfan.
Most recently before I last gave up on it I checked the bios and the temps there on one of the cores was bouncing all over the place. From 250F to negative readings. The machine never has never shut off like I would expect from overheating, and runs normal within Windows, just with the fan revving up and down all the time.
Now I'm thinking the temperature sensor is failing to get the proper readings. If that is the case I've never experienced that before, but I would expect speedfan is using those same sensors from within Windows and it's showing normal readings. So basically I'm at a loss as to what the problem is. It's a clean install of Vista on a new hard drive within the past two months. The problem showed up in the past week. Nothing extra appeared to be running in the background but I checked it out for any malware just for due diligence and it is clean.
I haven't found anything through Google that is a similar situation to this so I thought I'd check here. If you have any ideas it'd be appreciated. This is a bench machine so it's not a high priority for me, just quite the sound nuisance.
First thought was overheating. The CPU (dual core) temps were reading a steady low to mid 30's C, but I went ahead and cleaned the heatsink and processor and reapplied the thermal paste. Started it up again and it's no different, though the temperatures are reading slightly lower than before. This is with speedfan.
Most recently before I last gave up on it I checked the bios and the temps there on one of the cores was bouncing all over the place. From 250F to negative readings. The machine never has never shut off like I would expect from overheating, and runs normal within Windows, just with the fan revving up and down all the time.
Now I'm thinking the temperature sensor is failing to get the proper readings. If that is the case I've never experienced that before, but I would expect speedfan is using those same sensors from within Windows and it's showing normal readings. So basically I'm at a loss as to what the problem is. It's a clean install of Vista on a new hard drive within the past two months. The problem showed up in the past week. Nothing extra appeared to be running in the background but I checked it out for any malware just for due diligence and it is clean.
I haven't found anything through Google that is a similar situation to this so I thought I'd check here. If you have any ideas it'd be appreciated. This is a bench machine so it's not a high priority for me, just quite the sound nuisance.
