Question Verticle lines on monitor

[gaute.vgs]

The screen turns normal after like 10minutes of staying on ish.
what is wrong? just got it. havent dropped it.
do i have to send it back?

https://imgur.com/aNV0cGv

 

[Fix_that_Glitch]

Check your cables, connection at both ends. Give them a little wiggle when checking each end.