monitor DVI no signal

Apr 12, 2018
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yesterday my computer suddenly restarted itself when i came back on it said "DVI no signal" i shut down and booted it back up agin a few times and it didn't work so short story is i put it into the motherboard and it worked but today i realised i cant play games because it wont use the GPU so i plugged it back into the GPU and it didn't work either so i moved the GPU because i thought that since it was on an angle it might affect it so i moved it and it didn't work still so then i plugged it back into the motherboard port and that didn't work either PLEASE HELP ME