KenoPortugal

As you know the red triangle means your pump wont start but when you start your pc and hear a loud fan working you know its in fact working anyway this mean 2 problems your pump wont start and if its nor broken you shoud click your power button faster or slower to start your pc until it works and the red triangle gonne, or you nedd to make a clean update driver on your GPU because the lcd need that to work properly.

Connect everything as mention By Corsair guide also install the software icue and next RESET the commander core (i made a post before about lcd issue) i also recommend you change your settings in bios for keeping your usb ports running after power off your pc.

Here is some help from Corsair support that might solve your problem: Open your computer's Control Panel. Open the Programs and Features options. Select CORSAIR iCUE 4 Software in the list, and then select Uninstall. Press Window Key + R to open the Run command. Type %appdata% and press Enter. Delete any Corsair folders in the window that pops up. Return to the Run window and type %localappdata%. Delete any Corsair folders in the window that pops up. Open File Explorer and navigate to C:\Program Files (x86)\ for iCUE 3, or C:\Program Files\ for iCUE 4. Delete any Corsair folders in that folder. Type Regedit in the Run window and then click OK. Go to HKEY_CURRENT_USER\Software\ and delete the Corsair folder. Go to HKEY_LOCAL_MACHINE\SOFTWARE\ and delete the Corsair folder. Restart your computer. Download a new installer file for iCUE from Corsair.com and reinstall. Enjoy.

Hello nice People...fix this M..., I buy this H150i elite lcd a few days ago for my new set and the display do not work only the ring and pump so i just read all your posts, thank you for that, send a question for corsair they say they will answer when they can, fine by me, dont need to hurry, so i solved like this: 1º I remove the plastic cap, wathever you call it, dont solve my problem but looks nice and tight, and might solve the ! symbol problem for you i see it on youtube a guy removed 4 screws and thats it. Unexpectedly now the temperature is on 26 before was on 30º DONT need to do this to fix the lcd not workin screen but i like to mention that for ya. 2ª The real problem, nothing on the lcd screen. With the pc runing i reset the commander core, with the pc on, clip the hole in the commander core unplug the sata cable and pluged back again remove the clip the fans will start at full speed the lcd tottally dead and in device manager you will see an error from the sata controler, if you like to check, next turn off the PC turn on back again and everything is working just fine go to icue change wathever you want etc etc u know better then me. Do this on your own risk im not a computer technician, sorry for my english im portuguese and i hope i can help you. TC and remember do not keep people waiting 😉