Question Black screen and no signal to keyboard and mouse when turning computer on

Mar 30, 2019
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So I tried turning on my computer a couple of days ago after it was working fine the day before but just got a no signal message and seemingly no power to my keyboard and mouse despite the lights and fans in my computer working and the monitor receiving power.

I have tried using a different keyboard and monitor and resitting the RAM and graphics card but it hasn’t done anything, there is no beep code either.

Anyone who has had something like this before or can help would be appreciated