CPU fan 'revs' up and down rapidly

[KerryTheBoy]

Hello,

I'm having a problem with my CPU fan. It revs up and down every 5 seconds or so. I have not made any recent changes to the computer and it is working fine otherwise. It does not happen right from startup but waits until I do something moderately demanding - watching a video, playing a game, etc. and then revs constantly all day until I shut off the PC.

My setup:
-XPS 8100
-NVIDIA GeForce GTX 750 Ti (the only modification I've made)
-All BIOS and drivers up to date
-Windows 7
-Very clean - purged of dust regularly.

Stats (according to CPUID HWMonitor)
-CoreTemps:
Min: 33*C
Current: 33*C (fan revving)
Max: 52*C

Fan Speed (revving rapidly between these two)
Min 258 RPM
Max 3409 RPM

Here's a video of someone else with the same computer having the same problem (though he doesn't have the same fan...)
http://

So is my fan just wearing out or is there something else going on? I'd just swap out the cooling unit, but (I've read) it's a pain to do on these Dells because of the pins...

Thanks!

 

[KerryTheBoy]

For anyone who sees this, seems it's related to a Dell update and everyone's computers are doing it. Nice job Dell!
See this thread:
http://en.community.dell.com/owners-club/alienware/f/3746/t/19617992
I haven't solved the problem yet but others here have.

 

[KerryTheBoy]

Confirmed, it's a Dell SupportAssist issue and they have released a hotfix.
Link from Dell here:
http://en.community.dell.com/owners-club/alienware/f/3746/t/19618918

 

[drocksvold]

Hello,

I'm having a problem with my CPU fan. It revs up and down every 5 seconds or so. I have not made any recent changes to the computer and it is working fine otherwise. It does not happen right from startup but waits until I do something moderately demanding - watching a video, playing a game, etc. and then revs constantly all day until I shut off the PC.

My setup:
-XPS 8100
-NVIDIA GeForce GTX 750 Ti (the only modification I've made)
-All BIOS and drivers up to date
-Windows 7
-Very clean - purged of dust regularly.

Stats (according to CPUID HWMonitor)
-CoreTemps:
Min: 33*C
Current: 33*C (fan revving)
Max: 52*C

Fan Speed (revving rapidly between these two)
Min 258 RPM
Max 3409 RPM

Here's a video of someone else with the same computer having the same problem (though he doesn't have the same fan...)
http://

So is my fan just wearing out or is there something else going on? I'd just swap out the cooling unit, but (I've read) it's a pain to do on these Dells because of the pins...

Thanks!

My wife's Studio XPS 8100 had the same problem last week. From research on other sites I found mention of a Windows Update that may have caused the issue. I uninstalled the Dell Support Application and the problem appears to have stopped.