Question How to check if newly installed water cooler is connected and working?

[tigertower]

i just booted after installing it i got a error that a fan wasnt detected. idk if thats because i got rid of 3 fans and replaced them with the new cpu water cooler? how do i test that its working i have a app called speed fan on and the temp has been going down. i know that i probably sound dumb because the temp wouldnt go down at all if the water cooler wasn't connected. do i need to install something from corsair to make sure its working properly?

the water cooler is corsair hydro series h115i pro

 

[tigertower]

i can hear the water i think and the lights are on it but i think thats because of the micro usb. im really only scared because i got a beep error when i booted it.

 

[tigertower]

so i just found out its my gpu fan not cpu fan.

 

[tigertower]

when i push the power button my gpu fans start to spin then stop.