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ASUS Z790-H Bios flashback LED blinking, and pc not starting, NO Boot

xFuRyKilleR
Level 9
Got a problem, looking for solution
my setup:
ASUS ROG STRIX Z790-h GAMING WIFI DDR5
CPU : INTEL 13700K
RAM : DOMINATOR® TITANIUM RGB 64GB (2x32GB) DDR5 DRAM 6600MT/s CL32 Intel XMP Memory Kit
GPU : GeForce RTX™ 4060 Ti GAMING OC 8G
PSU : ROG STRIX 1000W GOLD AURA EDITON
 
So the problem is:
When i shut down my pc via windows, all looking good. All turned off as usual.
But when i starting my PC via button on front panel - it's dead, not booting at all, no sound, no coolers no led, nothing, and Bios Flashback LED staring blinking green on back panel. Constantly.
If i turned off PSU - Led turned off too, when i turn ON PSU - Led staring blinking again, and Power button on Front pannel still not working.
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1 ACCEPTED SOLUTION

Accepted Solutions

xFuRyKilleR
Level 9

I took a bold step that I had been thinking about for the past week but was hesitant to act on. I decided to go to a repair center and asked them to remove the FLBK BIOS button. I wasn't sure if this step would work, and I didn't have a replacement button, so I decided to take the risk. I let them handle it, and when I returned home, I tested the motherboard, and to my surprise, it worked perfectly as if there was never any issue! I performed all the tests, and everything is running smoothly. I still can't believe it, but I've finally found the solution. Don't forget to send kind words and prayers my way. Your brother, Moataz from Egypt.

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10 REPLIES 10

Nate152
Moderator

Hello xFuRyKilleR

Make sure your usb flash drive is formatted to the .FAT32 file system and preferably with nothing on it.

Follow this quick video to be sure you renamed the bios file and put it on your usb flash drive.

 

Once you have the bios file on your usb flash drive:

1) Shut down your pc and let the psu switch on.

2) Insert your usb flash drive into the usb port marked BIOS.

3) Press and hold the Bios Flashback button until the led starts blinking, then release. The blinking should get faster as it goes then stop when completed, should take a few minutes.

4) When the blinking stops, start your pc.

Z790-H Gaming Wifi IO panel.png

 

 

 

 

 

"I have uploaded a video on my YouTube channel explaining the details of my issue and the experiments I tried, but I haven't found a solution yet. I hope someone can help me solve the problem."

This seems to be the same issue addressed here: https://rog-forum.asus.com/t5/gaming-motherboards/asus-tuf-gaming-b650-plus-flashback-light-still-bl...


It happens to many people recently.

You can try to turn off PSU, wait a few seconds (e.g. 10), turn on PSU and IMMEDIATELY turn on PC by power button. It should start. But it work only until you turn it off again, then you need to repeat these steps.

ASUS still did not provide any solution other than warranty repair, while sending all those useless generic advices, which is frustrating.

 

EDIT: Nevermind - seems like you have posted there too, so this is nothing new. Sorry 🙂 

Thank you for your comment, but unfortunately, the method you suggested no longer works for me, and the situation has gotten worse than before. Now I can't even turn on the computer. If you have any information about the steps needed to send my motherboard to the manufacturer, I would really appreciate your help

Jiaszzz_ROG
Customer Service Agent

Hello @xFuRyKilleR 

Thank you for reaching out to us.
Based on the situation you described, we recommend performing a minimal hardware test to determine whether the issue persists. 
Please remove the chassis and install only the 13700K CPU (using integrated graphics for video output), the CPU cooler, a single RAM module, and the PSU on the motherboard.
Additionally, please ensure all power cables are securely connected. If possible, try cross-testing with an alternative PSU or power cables.
If the issue remains unresolved, we suggest contacting your reseller or local customer service team to arrange further inspection and repair.
I have also DM you and kindly check your inbox in the top-right corner at your convenience.

Thank you.

Due to the local holidays, my responses may be slightly delayed.
For any urgent cases, we recommend reaching out to your local service center for further assistance. Thank you in advance for your patience and understanding.

I've sent you a DM, please check your messages

 

Thank you 

Jiaszzz_ROG
Customer Service Agent

Hello @xFuRyKilleR 

Thank you for the update and I have responded to your DM earlier. 
Please kindly check it at your convenience.

Thank you.

Due to the local holidays, my responses may be slightly delayed.
For any urgent cases, we recommend reaching out to your local service center for further assistance. Thank you in advance for your patience and understanding.

  • I've sent you a DM, please check your messages

 

 

Thank you 

Nate152
Moderator

The store you purchased the motherboard from usually a gives 30-day warranty. After that, ASUS gives a 3-year warranty from the purchase date in most countries.

If you're past the 30-day store warranty, contact an official ASUS Support Center for your region.

Contact Us | Official Support | ASUS USA