Hello there, I have a little bit of a problem here. I'm not sure what's causing glitches on the monitor. These glitches are: pitch black square somewhere on the screen (big) , or a line across the screen vertical and horizontal, wide. They happen only for a split second. I had my gpu overclocked +50 on core and +500 on memory, with power and voltage to max in msi afterburner. But after i've started seeing these glitches i went back to stock, but it's still there. I don't have any typical graphical glitches ingame. It can happen outside and ingame. I usually spotted it outside of a game. It can happen once or twice and hour. I also have my cpu overclocked just a little bit 8700k with 1.31v and 4.7 clock. The GPU is Asus Strix RTX 2080. Motherboard is Asrock Z370 Extreme4. My ram is 16 GB G.Skill Aegis 3000Mhz. Also my monitor is 5 years old so this is something i have to add here. It's an LG 24GM77 144hz monitor, it's maybe even 6 years old, 2014 or 2015. I'm worried that could be GPU, I hope it's just a monitor. I don't have other monitors to test. Any solutions or ways to find the problem? I really didn't know where to start topic so i put it in GPU category. Thanks for any help