Hi, I have just finished building a new system using water cooling on the CPU. However the cooling kit I have also has a fan you put on top of the water block which then plugs into the power socket just next to the cpu (makes sense i guess because otherwise you always get that beeping at startup warning you about cpu fan failure). My problem is that the fan doesn't spin when the system is powered up. I know that the fan is fine as it works per normal when connected to any of the other mobo fan sockets. My only guess is that because the cpu is so cool form the water cooling that it doesn't require any additional cooling and doesn't activate the fan (haven't tested this theory though becaue i'm too afraid of running the system for any length of time in case of cpu meltdown). What is strange is that if i spin the fan a little (ie. give it a running spin with my finger) then it starts spinning as normal. Does ne1 know what the problem is? Because it's either the cpu fan socket on the mobo or the cpu simply doesn't require additional cooling and thus doesn't start the fan up. But then why will the fan start spinning after i've spun it manually? Also - I tested the socket with the stock intel cpu fan and it just 'jerks' around like its hiccuping - just like when a clock has too little battery power and the second hand struggles to move. Thanks. Note: all connections are correct including the additional 12v psu to cpu connection (although i can double that).
First of all welcome to the forum As you say I think fan spin work. Seems to me that there is no any power issue at all. I guess this, you say that fan is placed on top of the water cooler and if you give a small backup on the fan it will spin. So that there should be a kind of a block in between fan and the cooler. Check that there is any case.
Could you clarify - what do you mean by block in between the fan and the cooler? There is nothing between the fan and the cpu water-block.
