PC Start up issues

[TCE1iteVenom]

hi guys so my computer sometimes doesn't boot up properly so i click the power button and all the fans turn on full speed my monitor turn on without any display output and my keyboard lights up the only way I've found to resolve this is too flip the power switch on the psu then tap the power button on the pc till all the lights goes out (discharging the psu) then flip the switch and click the power button and then it starts as it should but I was wondering if anyone else knows how to fix this as I've been dealing with it for about 2 years now and any help would be appreciated  

[suedseefrucht]

Is your monitor connected via DisplayPort or HDMI?

If it is connected via DisplayPort, try HDMI.

If it is connected via HDMI, try DisplayPort.

Also which GPU and which monitor are you using?

[OddOod]

Specs?
Any debug lights on the mobo?

[leclod]

Something to do with the boot up memory check ?

Did you ever run a Memtest86 ?

Did you update your bios to the latest ?

Does it also happen at stock settings (reset the bios)

Edited February 5 by leclod