Question C'ant turn off pc with power button , no post , no display

Feb 14, 2021
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So I decided to upgrade my old pc from an I3 to a ryzen 5 2600X, I bought a new motherboard for the cpu and new ram . After assembling it , I pushed the power button and the fans started spinning but I got no display and no post . After that I couldn't switch off my Pc with the power button . I need help !
Pc specs : Ryzen 5 2600X
GTX 1050
8GB 3200 MHZ ram
ASUS PRIME a320m-k
240 W PSU ( no brand)