No post but power LED is on

Sep 4, 2018
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Yesterday i plug out all the wire and component to clean out all the dust on the motherboard and fan.then i plugged in back like usual and all i get is black screen after i start. There is no beep that show post process. Only fan and power led is on.

My pc spec:
Mobo : asus h310m-k
Ram : 8gb ddr4 2400mhz
Cpu : i3-8100
Gpu : msi gtx 1050
Storage : 1tb hdd / 120gb ssd
 


Psu : X-FIVE atx-500WH

I just tried remove the cmos battery and wait for 15 min then install it back. But still the same.