Issue with Asus z790 Maximus Extreme

[CRYOSS]

Hello everyone,*
I would like to help my hubby sooo much.
He tried literally everything to make his computer work after changing the mother board to Asus z790 Maximus Extreme.
Did any of you had issues after changing the board (the computer after a couple of minutes of usage just turns off) Please help me if you had same issue and *came up with a solution ( of course the obvious ones we already tried)*
*Thank you in advance fir your help.*
Have a good one*

[Jiaszzz_ROG]

Hello, CRYOSS.

Sorry for the slow reply due to the Lunar New Year holiday and any inconvenience this may cause.

Could you please share the following information to let us better understand your sanario?
- the current BIOS version used and the content of the setting in BIOS (or whether it is the default)
- the brand and model name of the CPU, DRAM, GPU, and PSU currently installed
- the OS version and OS build
- troubleshooting methods have been tried
- screenshot of any error message, if any

Meanwhile, it is recommended that you refer to the troubleshooting below fist.
[Desktop PC/Motherboard]Troubleshooting for Auto shutdown/ Auto reboot / the screen displays black
https://www.asus.com/support/FAQ/1015440/
[Motherboard] Troubleshooting - No Power/No Boot/No Display
https://www.asus.com/support/FAQ/1042632/
[Motherboard] ASUS motherboard troubleshooting via Q-LED indicators
https://www.asus.com/support/FAQ/1042678/

Thank you.