6 Replies Latest reply on Jun 3, 2016 2:27 PM by Intel Corporation

    i7 6700K HDMI port sometimes goes off/ no signal when booting up.




      I have an issue when using i7 6700K - HD 530 HDMI port.


      My mobo is ASUS Z170-Deluxe and RAM is Corsair CMK16GX4M2A2666C16R 2x8GB. I want to use on board both HDMI and  DP ports. I only connect power to the mobo and put on cooling fan on the core i7 6700K to test the HDMI port.


      It is strange that sometimes there is no signal on hdmi port when power on while the QLed stays on code 99 and when I press F1 on keyboard, it changes to code A9 meaning it gets into BIOS setting, but nothing come on monitor. Then when I press reset button, sometimes hdmi port works again, I can see the BIOS setting on monitor.


      I have tried to put on another GPU card to my mobo, and the hdmi port of the GPU card works like a charm without any problem.


      I also have taken the mobo to ASUS to replace with another RMA mobo, but the issue is still there. And have the CPU taken to vendor to test without finding any issue.


      My question is do I need to use HDMI 2.0 cable or 4K monitor for that HD 530 hdmi port? It really doesn't make sense.


      p.s. there is no problem for DP port, although I attach an DP-VGA adapter to the DP port.