Problem solved. The pump had to be removed from the case for some reason. Thanks anyway Shoggy, I appreciate it. :-)

Thanks. :-) Yes, I've tried both the RPM signal cable from the AS-controller and the CPU cooler fan, and the radiator fan. None works. And I even tried SYSFAN and PWRFAN together with CPUFAN, but to no luck.

Hi, I've recently installed some WC-products from AC in my computer. I'm quite sure everything went smoothly and errorfree, and I managed to fill the system perfectly. The green led on my pump controller (it says Mist, but it's a AC Aquastream controller). Revision is: Firmware 1.31. On to the problem then. My PC gives me black screen on boot. No POST, no boot beeps from the speaker/MB. I've disconnected the DVD writer, I've tried with only one HD (the DVD-ROM was able to open when all disks wer...