Not sure if this is a fault or designed into BIOS this way...
I have two Vostro 3360's i5 and i7 chips
The i7 version's fan fires up when it need cooling down and them stops when cool...all good
The i5 version's fan constantly cycles between around 2300 rpm and 3700 rpm with approx 0.5 sec intervals. slow/fast/slow/fast etc creating a constant up and down noise. The fan never cycles off like the i7.
Wondering if this is fault with the temp controller or the BIOS for the i5 chip has been programmed this way?
Thanks for reply, Royan. I forgot to mention both laptops are running A04 bios. I have reflashed the i5 with A04 to see if made a difference but it didn't. Thanks.
I also had problems with USB ports failing, replaced the USB controller but problem still there, the temp controller is apparently embedded with the CPU. Just organising with my Dell contact to replace the unit. Will let you know if replacement is OK. Cheers.