Z390 Phantom Gaming-ITX/AC No display on powerup
Printed From: ASRock.com
Category: Technical Support
Forum Name: Intel Motherboards
Forum Description: Question about ASRock Intel Motherboards
URL: https://forum.asrock.com/forum_posts.asp?TID=10959
Printed Date: 21 May 2024 at 5:52am
Software Version: Web Wiz Forums 12.04 - http://www.webwizforums.com
Topic: Z390 Phantom Gaming-ITX/AC No display on powerup
Posted By: smoore
Subject: Z390 Phantom Gaming-ITX/AC No display on powerup
Date Posted: 25 Feb 2019 at 12:08am
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Setup: Z390 Phantom Gaming-ITX/AC Intel i9-9900k Cooler Master 650w PSU Corsair Vengeance DDR4 3200MHz 16gb (8+8) The cpu, mobo, and PSU are all brand new. The memory is from another machine that has been running fine for a while. Problem: On power up nothing is displaying. No error codes, no indication that any peripherals are even present. CPU fans power up and spin when connected, but that's it. I've stripped out everything non-essential and just have the PSU, mobo, and RAM hooked up. I've tried 2 monitors (both I know work). The memory works in other computers, but I've also tried them one at time in each mobo slot. I've triple checked the PSU connections. I've removed the CPU and double checked for bent pins. Can't find anything. I'm out of ideas. Last time this happened to me it turned out that the mobo did not support the CPU without a BIOS update, so I had to buy the cheapest last gen CPU to use to update the BIOS, but this time I jumped right to the X90 (vs the X70) to ensure BIOS compatibility. One thing that is driving me crazy is on the rear of the mobo, there are two slow blinking red LEDs that turn on once I flip the PSU on (but before I power up the system) but I can't find anything about them in the manual, nor via Google. Thoughts? |
Replies:
Posted By: smoore
Date Posted: 25 Feb 2019 at 2:11am
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New symptom: system powers down after about two minutes. (still no display and not able to get to BIOS). This means it has to be PSU related, right? |
Posted By: smoore
Date Posted: 25 Feb 2019 at 2:42am
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Okay tried a new PSU that I know works (with cords that I know work) and got the same result. :( |
Posted By: Coin3
Date Posted: 05 Mar 2019 at 5:56am
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I have encountered the same issue with my motherboard, and I've found one more person who had the issue and fixed it by switching to the Asus MB: [URL=https://pcpartpicker.com/b/yXtgXL]https://pcpartpicker.com/b/yXtgXL[/URL] It must be a fault with the batch our boards were made in.  My board is on its way back to Newegg for replacement. |
Posted By: Jucko13
Date Posted: 06 Mar 2019 at 12:21am
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I had the same problem a few days ago when the board arrived. What I did is remove the graphics card and connect a display to the onboard display port or hdmi. Now it should post and you can update your bios with a usb-stick. My bios needed to be updated to 1.50 to support the i9-9900K. Hope this helps |
Posted By: Coin3
Date Posted: 08 Mar 2019 at 12:51pm
I'm glad that you were able to fix your MB, but unfortunately doing the same with mine did not fix the problem. Even after removing the graphics card and all extra connections, leaving just the power supply, MB, CPU, and RAM, the system would not post and would restart itself randomly. My return to newegg has been approved, and I got a MB speaker and multimeter this time for troubleshooting if I run into problems with the replacement. I will update if I anything comes up. |
Jucko13 wrote:Posted By: Coin3
Date Posted: 16 Mar 2019 at 2:15pm
| I just want to report that I got a replacement for my Z390 Phantom Gaming-ITX/AC MB, and it works with no problems. I had a bit of a scare during the first boot because it reset itself twice (I assume to prep the BIOS), but no problems from then on. |