[SOLVED] Why does my newly build pc cannot detect my monitor?

Sep 28, 2019
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Mobo: Asus prime a320m-k
Cpu: athlon 200Ge
Ram: 4GB DDR4
Gpu: nvidia 310
Psu: 750W (not true rated)

Everything was working, the fans of cpu, gpu, cooling fans and mouse. But cannot detect my monitor. I already tried removing the battery. Rechecking the rams and gpu but still it's not working. Also tried readjusting removing the cables. I tried changing the psu to my old psu i noticed some fans worked and some fans didn't. Is it my psu?
 

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