Question AsRock h81m-dgs strange problem

Nov 9, 2021
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Hello, I have a strange issue with my mobo asrock h81m-dgs.
When I press power button mobo start spinning but no bios post, no video… nothing happens. When i press restart sometimes pc boot normally, when I turn off (long press on pwr button) and than turn on pc boot normally.
I have changed bios battery, ram memory, psu (couple of them), cpu, graphic card, without graphic (integrated graphic active), get mobo from the pc case.
Someone with the simillar issue?
 

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