Windows screen projection issue

[jager774]

Hello everyone!

I bought a 20M (~65 feet) HDMI cable to run around the room from my desktop to a Samsung TV.
I ran the cable, plugged it in, Windows recognized the TV and it was working fine, but I selected Duplicate screen mode from the Windows key + P menu, and it kinda broke.
Since then If the TV is plugged in there is absolutely no signal on the TV, and the primary display is buggy, its "jumping" all over the place and I cant click anything or change the setting, if I press Win+P to swap between modes nothing happens.
The monitor is working fine without the TV plugged in, but not the other way around, so now there is no signal on the TV even if that is the only screen plugged in.
If only the TV is plugged in and I press the power button on the PC I can see the POST screen but when it reaches the Windows loading screen there is no signal from that point forward.

I tried restarting both the PC and the TV, and tried all ports on both devices.

Is there a way to reset the secondary monitor projection setting to default/extend screen, or to force a secondary display mode to be used?

The TV is:
Samsung NU7442U (UE55NU7442UXXH)

The cable is:
http://econ.tv/econ-hdmi-cable-20m-e-517

PC Specs:
Ryzen 3 1200
ASUS Prime B450M-K
2x4GB Kingston HyperX Fury 3000MHz
ASUS GTX1060 3GB Dual