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Old 05-12-2019, 08:23 AM
c-attack c-attack is offline
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Join Date: Jun 2014
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The H100i v2 gets its power from that motherboard lead. Make sure you have set fan control to 100%/Full Speed or “disabled” in the BIOS. Powered from the Commander Pro the fan curve needs to be 100%, although I do not recommend using the C-Pro to power the H100i v2 and both its fans when connected to the cooler. There is no benefit since the pump should not be controlled in that way.

You should see the BIOS report 1/2 the pump speed or around 950-1000 rpm for the quiet setting. If you still see zero with power at 100%, that is a fairly serious issue and likely requires replacement. I would not take the time to reinstall Windows. This is not likely to be software and is usually hardware. Save your clean install for two weeks from now with the next Windows.
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