How to fix "CPU Fan Error!"

With water cooling the CPU fan is normally set to ignore in Bios since no fan is plugged into the cpu_fan header on the motherboard.    Might be under the Advanced screen, Monitor tab but check the manual or just poke around.

None of your fans are showing. Do you have the DS fan control center? If so, that's where the chassis fans are plugged in and wouldn't show in the Bios screen you posted.   

With no fluid moving to cool the CPU, the rig might be shutting down rather quickly because of overheats. While in Bios, go to Advanced Mode and look for the fan section so you can check that the CPU fan speed is set to Ignore or Disable.

If the fluid isn't flowing to the CPU, you'll need to fix that first.   

Now that the fluid situation is at least temporarily fixed, now I'm back to the CPU fan error, which I'm still getting. Bprat22, I did what you recommended and got as far as this screen in advanced/monitor:

Correct.

Hi Khuminis,

With the amount of dust coming out of the front radiator there is a chance that the radiator is not doing its job. You need to blow and vacuum out your system. Especially that front radiator. Get yourself a can of canned-air from Office Max, Best Buy. You need to blow the air through the rad. Be careful to keep the can air vertical and level. If you tip it you might get some moisture out of the can. When you blow the air through the rad use a vacuum at the same time to collect the dust. You don't want it to settle back on your components. Don't touch anything in the computer with the vacuum.

Frank    

It's all dependant on the temps. If Silent keeps everything cool then win - win..cool and quiet.    If temps climb too high then try Standard, etc.

Did you save the Bios each time to hold the setting?

Not sure, but some motherboard s will only control 3 pin fans and some others 4 pin fans.   Depends if the mobo has voltage or pwm control, or both.   

What's the mobo?

right now my highest core temp is 25 and CPU temp is 28

one thing I dont understand when I was running the Link controler it showed CPU fan which is cooler at 2800 rpm HWmonitor showed around 1400 rpm

that mobo has 4-pin fan headers that can be used in a 3-pin config by leaving the pwm controlling wire connector slot unpinned if that makes sense.  like bprat said, most case fans only come with a 3-pin connector w/3 wires connected to them.  if you have pwm-capable case/rad fans then they'll have 4-wires and 4-pin connector on them.  this will allow you the flexibility to either run pwm or dc mode.  that board has an auto detection/auto tuning feature that will tell how you have the fans/heat sinks connected and set them up optimally automatically.  if you desire to manually config your cooling you can do that as well.  it also has an "extreme quiet mode" which reduces cpu fan speed below the default minimum for when the system is idling.  i'm assuming that means the default minimum speed is probably on the 7-volt setting and "extreme quiet mode" sets it to 5-volts. 

pwm just gives you more control of the fan speeds.  with dc you have linear control.  the main advantage being that it is quiet.  however, the speed control is limited. for example, a 12-V fan with a control voltage range from 7V to 12V could be running at half speed at 7-volts.  with pwm you can run the fans in percentages as low as 10% speed, for example.  pwm fans can be noisier due to their high signal frequency. 

That did it db188! Thanks.