Ah I have that case, I put in-line resistors on the fan wires (the included 14CM blue LED ones) to quieten it down a bit.
Also, I assume your cooler is one where you plug the fan into a female connector coming out of the pump/block, and then plug a single connector into the motherboard? If so, give the fan and pump a seperate fan header each. My Kuhler 620 used to make that noise, and I remedied it by doing that.
Then there should also be an option to control the speed of the fans in the BIOS, I made use of that too, and also undervolted my GPU slightly and made the fan curve less steep, as well as turning the PSU the other way up.
A bit of oil on those fan bearings will help too, the bearings in my case fans started to get a bit 'buzzy' after 18 months.
Thanks for the advice.
I can't put the fan on another header because the computer will not boot into the BIOS. I did hold the fan blade on boot up just to test if it was the fan and upon booting into the BIOS I had a fan failure message and I couldn't see how to bypass it.
I have looked into the BIOS of the motherboard and have changed the speeds of my fans down to quiet (About 300 rpm) but in AI Suite II, it says its running at 500-600 rpm and for a few months now, Fan Xpert II will not load, I keep on getting a failure message!!! This is really getting annoying.
I have MSI afterburner but I will now download EVGA Precision to do fan curves.
Did you mean for the PSU fan to be facing down?
Its a shame that my fans have been making this noise since I brought it around Christmas last year.
Any advice on what Oil I should use?
Thanks for the advice.