Hey guys, i've just built a new rig and set it all up
I really need to ask...
With my motherboard (M5a97 evo R2.0) When i look in the bios on the fan speeds (hooked up to the mobo) The rpm fluctuates. When it's set on standard or turbo etc... all of the fan speeds change every second from say 600rpm then can shoot up to 20.000, varying wildly. If i set it on silent they all stay at 600 rpm, but if i set any other go completely mad.
A video i found like i have (but this guy had it happening to one fan - all 3 do this to me)
Is this normal? I was reading that it could be a bad sensor?
I also noticed when i got the motherboard out of the box, that the bag was unsealed and fingerprints on the CMOS battery!
Any help would be great!

With my motherboard (M5a97 evo R2.0) When i look in the bios on the fan speeds (hooked up to the mobo) The rpm fluctuates. When it's set on standard or turbo etc... all of the fan speeds change every second from say 600rpm then can shoot up to 20.000, varying wildly. If i set it on silent they all stay at 600 rpm, but if i set any other go completely mad.
A video i found like i have (but this guy had it happening to one fan - all 3 do this to me)
I also noticed when i got the motherboard out of the box, that the bag was unsealed and fingerprints on the CMOS battery!
Any help would be great!