Hi.

Last week i received my XPS8100. The system works fine but there seems to be a problem with the processor fan. It revs up to around 3500rpm every minute for a very short time: only a second or two. After that it's back to normal and silent operation. It does this almost every minute. I've installed a tool to check the cores temperature and that reads around 35 to 50 degrees celcius depending on processor load. I think that is normal for a stock cooler right? I've opened the case to make sure it is the processor fan. I performed the dell diagnostics and there seems to be no problem with the system, even the specific fan test passed with no problems. It's strange because it's only revving up for a second or two. 

It doesn't matter what the pc is doing. The problem occurs when the system is just turned on after an extensive cooling down (ie a night off). Also when the system is idle. It even occurs when i'm in the bios screen. So when the pc is turned on the problem is there. 

I called dells XPS support and they could help me at this moment. They told me that i was not the only one called about this behaviour and that i should check the support section on a regular basis to check for updates. That's fine, but i'm wondering if i can investigate a little bit more. I have these specs:

XPS 8100

i7 860 @ 2.8ghz, 12GB ram, nvidia 240GT, soundblaster x-fi titanium soundcard, 1.5TB harddrives, window  7 pro 64bit, bios A03 (appears to be the last version)

any ideas or suggestions?

TIA

Raymond