Took out stock cpu heat sink and placed in the rad and water block. Replaced thermal paste after cleaning cpu with alcohol. Plugged the pump in to cpu fan 2 and the fans into cpu fan1 with a double connector they sent with it. All the led and fan light turn on along with the hdd light. but the screen stays black. Removed it and placed stock heat sink back in and it booted and posted fine... Tried changing the fan headers around but same results.
Mobo:z87-45g
Cpu: 4790k i7
Gpu: r9 390
Mobo:z87-45g
Cpu: 4790k i7
Gpu: r9 390