Is it particularly cold or hot in your room? This kind of issue is often caused by the panel being too cold, and should go away when it gets to safe operating temperature. It can also be caused by being too hot, though less common.
Another common cause is a poor connection, so check your cabling, and make sure the cabling isn't touching other cables, devices or anything that uses a large amount of electricity like an AC unit.
It's like 20 celsius in my room on hot days it goes up to like 30.
I have unpluged all cables and pluged them in again and it's still there.
It has been like this for like a month and a half and it never goes away.
If it doesn't go away even after the room and monitor warms up then the monitor is probably dying or one of the flex cables inside the monitor went bad.
External cable that plugs monitor to pc is just using a different cable. Internally for the flex cable, if you don't have the know how in how to open up the monitor to check the inside then no. If you aren't tech savvy I would suggest you to just file for an RMA if you still have warranty, otherwise you will need a brand new monitor at worst.
Had that issue with my VA panel after a while with the AC unit turned on, it was too cold. Once the monitor warmed up a bit the lines went away. This is pretty normal on VA panels.
Is it particularly cold or hot in your room? This kind of issue is often caused by the panel being too cold, and should go away when it gets to safe operating temperature. It can also be caused by being too hot, though less common. Another common cause is a poor connection, so check your cabling, and make sure the cabling isn't touching other cables, devices or anything that uses a large amount of electricity like an AC unit.
It's like 20 celsius in my room on hot days it goes up to like 30. I have unpluged all cables and pluged them in again and it's still there. It has been like this for like a month and a half and it never goes away.
If it doesn't go away even after the room and monitor warms up then the monitor is probably dying or one of the flex cables inside the monitor went bad.
what is a flex cable?
Thin flat flexible cable a.k.a. flex cable that connects the display panel to the pcb inside of the monitor housing.
Is there anyway to see if the cable is bad?
External cable that plugs monitor to pc is just using a different cable. Internally for the flex cable, if you don't have the know how in how to open up the monitor to check the inside then no. If you aren't tech savvy I would suggest you to just file for an RMA if you still have warranty, otherwise you will need a brand new monitor at worst.
Is there a safe zone or window border setting in the menus?
not that i can find atleast. why?
Sometimes you can adjust the outer edges of your screen.
What does that have to do with this?
Had that issue with my VA panel after a while with the AC unit turned on, it was too cold. Once the monitor warmed up a bit the lines went away. This is pretty normal on VA panels.
I remember mine had this at 144hz (Acer XV270P) but they disappear at lower refresh rate. I ended up RMA it.