Question Samsung c27hg70 not optimum mode

[mlettema]

Hello everyone,

I was using my pc like I do it everyday, watching video's etc. I noticed the screen was blurry/low quality, so I rebooted my PC. Then when it booted my main monitor, the Samsung c27hg70 displayed a message saying "Not Optimum Mode - Recommended Mode 2560x1440 144hz."

This is weird, because I have always had my display settings for my 1st, the Samsung, monitor as 2560x1440 144hz.

When I use a HDMI cable the monitor does work, but that is inconvenient with cable management, and I prefer DP. My secondary (HDMI) monitor is still working, and I can't change the display settings for the main monitor, so I am a little at a loss for what I should try now.

 

[mlettema]

Update: I fixed it. I disconnected and re-connected the power cable and then the DP cable, and for some reason it works now.