Question New Display no signal unless its in safe mode

Nov 17, 2018
I have 2 PCs 1 new and 1 old, I decided to Upgrade the old One, new cpu etc.
I Upgraded my monitor as well.
I used an tv before and it worked fine but the new monitor (acerED242QR) but i have NO signal on it, if i Plug the old tv Everything Works as it should.
I tried reinstalling drivers, updating bios both didnt fix my Problem, the monitor Works perfectly fine on my new pc.
The monitor just Works if my old pc is in safe Mode.
Please help me.

Old pc :
Ryzen 5 2600x , ASRock b450 pro 4, RX 570 4gb, 16gb 3200mhz ram.
New pc :
Ryzen 5 3600, x570 msi gaming plus, rtx 2070 Super, 16 gb RAM

On the old pc i could only get a Signal in safe Mode with HDMI (DP didnt work)(i tried to Restart in low Resolution Mode and it Booted but i had white dots everywhere as it would be broken ) (nvm it was a one time thing, i couldnt get it to boot again),new pc DP worked perfectly.
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