Question Coloured Lines on one monitor but not the other? Help

[Ampwillett]

Hi I have coloured lines on my main monitor but not my other one as I have duel screens it literally just happened as I was playing Warzone? Help?

 

[rgd1101]

test with different cable?
test with swap the port on the gpu?

 

[Ampwillett]

test with different cable?
test with swap the port on the gpu?

Tried both didn’t seem to make a difference?

 

[rgd1101]

try to replace the monitor

 

[Ampwillett]

try to replace the monitor

Tried just plugging in my different monitor As I have duel screens and that seemed fine do you think it’s a monitor issue? Or gpu

 

[rgd1101]

monitor