Hey, give this link a shot: https://www.samsung.com/us/support/troubleshooting/TSG01110761/ If the monitor still fails after these steps. I recommend getting the device looked at by a service technician. You can leave your full model code and serial number via private message or call 1-800-SAMSUNG directly.
Be sure to click " ✓ Accept as Solution" when you find an answer that works for you.
Please note, notification emails are a DO NOT REPLY address, you must log-in on the community page in order to respond.