Monitor and computer no signal

TechAttack

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I'll try to make this as detailed and informational as possible.

I was on my conputer when I decided to restart it. When it did, the starting screen was completely green and it was frozen like that. Right away i knew it was an HDMI problem because this has happend before. I was moving my cable around like an antenna to see if I can get it to stop showing colors, but instead it went black. I decided to unplug my HDMI port And plug it back in. When I took it out it was missing that outer casing and looks like a ton of metal strings sticking out. I assumed the cable was bad so I removed it and put another one in to both my monitor and computer. When I turned on my computer it said no signal. I tried removing it and replugging it, turning off the power, googling solutions And nothing worked. How can I get my monitor to recognize my pc?
 
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