Windows 10: One monitor turns off/doesnt come back on - message “No DP signal”

I’ve had the same two-monitor set-up for approx. 1yr and never had any issues. Now, all of a sudden one monitor either stays off after sleep mode or doesn’t come on when performing a restart. The only way to get both monitors up and running is to shut down the computer and switch it on again. The message I’m getting is “No DP signal”. Can anyone explain why this came up and/or how to fix it? Thanks

:)

 

Windows from HDMI monitor move to DP monitor when monitors go to sleep.

Hi Bobbeloos,



Welcome to post in Microsoft Community.

I'm Mosken, I do apologize for the inconvenience that you're experiencing right now, let me help you figure it out.



According to your description, I knew that you have two external monitors of similar model connected via HDMI and DP, but when the system goes to sleep, the DP-connected monitor goes straight to black, but the HDMI-connected monitor shows "no signal" and then goes black, and when you go to sleep from sleep, the DP-connected monitor goes straight to black All windows in HDMI monitor moved to DP monitor when computer was woken up and the resolution was not normal. If my understanding is wrong, please correct me in the reply.



Based on the available information, the speculation is that when the system goes to sleep, your HDMI connected monitor will be directly disconnected, it is recommended that you turn off "Allow the computer to turn off this device to save power" by follow steps. "Win" + "X" > "Device Manager" > "Display Adapter", double click "Display Adapter" to expand the entry, you will see a list of your monitor device names, then select your external monitor device names(try both), right click > " Properties" > "Power Management" tab, then uncheck "Allow the computer to turn off this device to save power", then press Enter to confirm.



The above steps are provided based on the information I have learned so far, I wish that will be helpful to you. If your problem still cannot be solved by these steps, you could tell me the specific situation in the next reply. I will continue to assist you in solving the problem.



Best Regards,

Mosken- MSFT | Microsoft Community Support Specialist

 

Windows 10 Update Installed & Now No Signal to Monitor

Hi,

For us to isolate your concern with your monitor's signal, we would like to know the following:

• When you say "signal", are you referring to the Internet?
• Are you getting any error messages? If yes, what is the exact error message?
• To make sure that we have not missed on anything, what troubleshooting steps have you done so far?

We look forward to your response.

 

Displayport gives no signal

Did you check the DP/DVI cable swapping it? I mean did you check it in both ways? GPU-DVI/DP-MONITOR and GPU-DP/DVI-MONITOR.