Computer freezes, and no signal to monitors after restarting

Jan 11, 2019
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My computer every now and then freezes and upon hard resetting it, my monitors wont receive any signal but I'll still hear the Windows boot up sound. I found a work around which is to turn off the power altogether, unplug the power completely, and take out the monitor cables (an HDMI and DisplayPort), and then plug them back in in that order like 5 minutes later. Any solutions as to what it could be?
 

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