Question Second Monitor Keeps Disconnecting

Apr 11, 2021
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For the past week or so, my second monitor is constantly disconnected from my PC every time I turn it on. I would have to fidget with the HDMI cable until the PC detects the monitor and it is very annoying to deal with. I have been using my ASUS VS228H-P as my second monitor for about seven years now and I have never had this problem.

Every time I turn on my computer, my second monitor would either display the "HDMI Not Detected" box or not show anything at all. My main display (ASUS VG248 with DisplayPort) works totally fine. To get my second monitor to be detected, I would need to unplug my HDMI cable from the monitor or the PC multiple times and replug which is a hassle. To make matters worse, it would display in 1024x760 instead of 1920x1080. On the NVIDIA Control Panel, it says it recognizes the connection as a DVI connection. I have read from previous posts to unplug the monitor from the power source to restart the processes, uninstall and reinstall my graphics driver, etc. but none have worked yet. I am using the CRU application temporarily to make the resolution 1920x1080 until I find a fix. Another note, before these problems, Windows would recognize my monitor by its model name but now it is just "Wired Display".

I currently have a NVIDIA GTX 1660 SUPER and am using the same HDMI-HDMI cable.

Methods I have tried:
  • Unplug HDMI cable and replugging
  • Switch sides of cable
  • Use different HDMI cable
  • Unplug monitor power and replugging
  • Restart PC
  • Uninstall display driver and reinstall
  • Install previous version of NVIDIA driver
  • Turn off monitor then turn on PC (reverse sequence)
Any help would be greatly appreciated! Thank you!
 
Apr 8, 2021
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try restarting your drivers by doing this: Win+Ctrl+Shift+B: the screen flickers, there's a beep, and everything is back to normal immediately.
 
Apr 11, 2021
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try restarting your drivers by doing this: Win+Ctrl+Shift+B: the screen flickers, there's a beep, and everything is back to normal immediately.
I've tried this and it doesn't fix it :( The resolution is still 1024x760 and the connection still says DVI instead of HDMI.
 
Apr 11, 2021
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try using dvi monitor and than go back idk thats weird does it show second monitor on boot?
Update: Whenever I completely shut down my computer or let it go into sleep mode, the second monitor would have no connection on bootup. I figured out that I have to restart my computer after I bootup after a shut down and my second monitor would connect.

I am not sure why this is happening but it is working for now. I went into the BIOS screen but I couldn't find anything related to where my monitors are. They are connected to my graphics card not my motherboard so I don't know how to navigate to see where it is connected on the BIOS.
 
Apr 11, 2021
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check the video cable from the tower to the monitor, making sure it is firmly connected to the video card and the monitor input. Try if using the cable and you are using the Dvi port of the graphics card another dvi port if provided. Or try another video cable. :(
I am using the HDMI port from my graphics card and an HDMI-HDMI cable but I don't know why the card is reading the connection as a DVI connection. The cable is secure from the monitor to the tower so no problems with that. I tried it with a different HDMI cable and the same results, a DVI connection instead of HDMI. What has been working is immediately restarting my PC after booting up and my second monitor would connect just fine.
 

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