I own an ASUS TUF Gaming VG279Q1A 27" 165Hz Gaming Monitor (Supports 144Hz). I've been using it for ten months, and it's been flawless. I couldn't change the Hz to 144hz at the time because half of the screen would go black as if it were broken. So I changed it to 120hz, and it worked fine, and it started having the same problem, so I changed it to 60hz until almost the entire screen went black, and now I can't use it. I tried the best HDMI display port, but it did not work. Please help me, Thank you!