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Z790 Cant start up with power buttom

Adidaz
Level 7

I have the  ROG strix z790-A gaming wifi D4

i cant start the pc from power buttom anymore, unless i clear Cmos or take power from PSU for around 1 min.

if i make any changes in bios and save it, pc shuts down instead of restarting.

Flashback light flashes on the motherboard.

ones started pc Runs normal.

i tryed new PSU, older bios, but problem is still there, any suggestions. ?

 

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6 REPLIES 6

emjay102294
Level 8

I have the same issue - learn to lived with it but there are other post here with same issue and the fix was to  remove the actual bios- flbk button in the back

Jiaszzz_ROG
Customer Service Agent

Hello @Adidaz 
Thank you for reaching out to us.
Could you please clarify if this issue occurred after the PC was first built or after using it for some time and occurred following any recent changes, such as a BIOS update or component replacement?
What is the current BIOS version, and does the issue persist after updating to the latest version 2801?
In addition to referencing the user manual to ensure the CPU pins are not bent, all power cables are properly connected, and, if possible, cross-testing with another PSU, could you kindly provide a detailed video to help us and the relevant team better understand the scenario?
For example, you could record the process starting from shutting down the system, the inability to cold boot, with no Q-LED showing. Then, demonstrate any troubleshooting steps you attempted and whether the system could boot afterward.

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 already got a new PSU, it did not help. the pc has been running fine for atleast 7 month, so it is no new build, i have switch all cables, i suspect this came with bios update 2801, but i also tryed to go back to an older bios with no luck.

GrayFox8
Level 8

ROG STRIX Z790-F GAMING WIFI

as @Adidaz mentioned from above, having same issues. 

BIOS up to date? - yes Version 2801 (from 2703 issue persist, reason why i update)
Reset CMOS - Yes (from back of the PC and removed CMOS Batt while i clean and removed all that was plugged in MB)
Have tried a different PSU - Yes
Have you tried using a different AVR - Yes (also done plugging the PC directly w/o it)
Removed RAM - Yes (as mentioned above i clean all that was attached)

as mentioned by Jiaszzz_ROG aboveprovide a video.

Video - https://app.screencast.com/h989STNuNDl53

Video - is cold start, as seen the BIOS light is blinking, only trick was to power of again, wait for the power regulator to "hear" it kicked in as you only have 2 secs to press the power button for it to turn On.

Once ON it runs properly, note: that BIOS light doesn't stops blinking (no flash drive inserted). 

Hassle was when shutdown, you won't be able to power on again you need to do as what seen in video. 


Hope this helps the support team to exactly see what users having same issue was talking about. hoping that this can now be resolved as I see many people are having similar issues.

Jiaszzz_ROG
Customer Service Agent

@GrayFox8 

Thank you for reaching out to us. 
We apologize for the delayed response due to a public holiday in our region and any inconvenience this may have caused.
We have noticed that you have posted a separate thread and also reached out in DM. To avoid potential discrepancies or confusion, we kindly recommend refraining from posting duplicate messages.
I have updated our conversation in private messages and please 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.

GrayFox8
Level 8

Hi! @Adidaz ,

similar issue that i have been having was fixed during recent windows update. 

yeah it's weird, and yet it fixes the said issue on its own on my end. 

does it did same on your end?