Can't get Z390 Phantom Mini-ITX to work

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   Hello all! I have a Z390 Phantom mini ITX mb with a 8700k CPU. I am trying it on a bench and can't get the system to POST or display any video.

Without RAM I can hear 3 beeps, so, something is working.

As soon as I install RAM, no beeps, no video. The mb comes on, then off after a few seconds, then on, then off again after a few seconds, then on and stays like that indefinitely.

No video, no beeps. The fans are spinning.

I tried to use a single RAM stick on each of the slots, also tried to reset the CMOS, without luck.

What should my next step be please? Thank you!

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Cirruz Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 06 Jan 2024 Location: UK Status: Offline Points: 20	Post Options Post Reply Quote Cirruz Report Post Thanks(0) Quote Reply Topic: Can't get Z390 Phantom Mini-ITX to work Posted: 06 Jan 2024 at 5:00pm
	Hello all! I have a Z390 Phantom mini ITX mb with a 8700k CPU. I am trying it on a bench and can't get the system to POST or display any video. Without RAM I can hear 3 beeps, so, something is working. As soon as I install RAM, no beeps, no video. The mb comes on, then off after a few seconds, then on, then off again after a few seconds, then on and stays like that indefinitely. No video, no beeps. The fans are spinning. I tried to use a single RAM stick on each of the slots, also tried to reset the CMOS, without luck. What should my next step be please? Thank you!

Xaltar Members Profile Send Private Message Find Members Posts Add to Buddy List Moderator Group Joined: 16 May 2015 Location: Europe Status: Offline Points: 24608	Post Options Post Reply Quote Xaltar Report Post Thanks(0) Quote Reply Posted: 07 Jan 2024 at 6:35pm
	Try connecting a bootable flash drive to the system, one with an activity indicator LED. It could be that the system is POSTing but you are not getting a display for some reason. If the system accesses the flash drive then the odds are high that it is in fact POSTing and trying to boot. If that is the case, try different display cables and/or try a discrete GPU. Good luck