I did a build last night with an Intel I5 processor using the fan that came with it. When I powered on, the fan didn't turn, and I immediately hit the off switch, and checked everything. Tried again and it still didn't come on, till I flicked it with my finger.
Figured that maybe current MBs didn't turn the fan on right away, so I let it go till it hit 90 degrees at which point I used my fingers and it burst into action hitting 1000+ RPM and being very noisy until the temp dropped.
Eventually I realized the the fan wire, which is anchored in a circle, was barely touching the fan blade at one point- enough to stop it starting, but not enough to stop it once it was spinning ... and also the cause of the extra noise.
I had to play around tugging enough slack out of the circle of wire to make a safe separation.
It seems this is a manufacturing defect.
Figured that maybe current MBs didn't turn the fan on right away, so I let it go till it hit 90 degrees at which point I used my fingers and it burst into action hitting 1000+ RPM and being very noisy until the temp dropped.
Eventually I realized the the fan wire, which is anchored in a circle, was barely touching the fan blade at one point- enough to stop it starting, but not enough to stop it once it was spinning ... and also the cause of the extra noise.
I had to play around tugging enough slack out of the circle of wire to make a safe separation.
It seems this is a manufacturing defect.
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