Monitor stopped displaying

Yesterday, my monitor stopped displaying anything. This started happening a few days ago but after a few reboots it would display again. However, it has permanently not displayed anything since yesterday.

I have two spare monitors which I have tried to use. However, the plugs do not match; therefore, I can't test it out on a different monitor.

The possible parts which I think could be causing the problem are the video card, PSU, motherboard, or the monitor. When I boot the computer, the video card fan is spinning so I am not sure if that is the problem.

I would like some suggestions and opinions on this. Thanks :)
 
Thanks for the link. I'll try to test those out.

I just tested out the monitor on my other computer and it displays. So it is something internal on the problematic computer that is causing the problem.
 
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