Windows 10: Computer wont wake from sleep after adding a 2nd monitor

I recently got a new 1440p monitor to replace my main monitor and hooked it up to my pc with a displayport cable. Ever since I got the monitor, whenever I try to wake the computer from sleep or even sometimes when I turn the PC on, the power light on my case will turn on, the monitor will "turn on" but not actually display an image, and the fans will throttle up really high but the computer wont actually boot. For context, when I turn on my pc and it successfully boots, the power light will turn on and the processsing light under the power light will flash to indicate that it is booting; the f

:)

 

Monitors (2) wont wake from sleep mode

Hello, I'm Greg, here to help you with this.

1) Try these fixes for Dual monitors not waking from sleep in WIndows 10:

https://superuser.com/questions/1225764/dual-mo...

https://www.maketecheasier.com/fix-a-monitor-no...

https://windowsreport.com/computer-wont-wake-up...

(Avoid ad links which intrude into editorial copy, especially DO NOT INSTALL Restoro, PC Repair Tool and Reimage ads)



2) The Display driver is so important here that merely updating it might not be enough. Try everything here to make sure:

https://answers.microsoft.com/en-us/windows/for...

3) Try these other fixes for Sleep Not Waking that might help:



https://windows101tricks.com/windows-10-wont-wa...

https://www.kapilarya.com/fix-windows-10-wont-w...

https://www.guidingtech.com/fix-windows-10-wont...



4) Go over this checklist to make sure the install is set up correctly, optimized for best performance, and any needed repairs get done: http://answers.microsoft.com/en-us/windows/wiki...



Feel free to ask back any questions. Based on the results you post back, I will have other suggestions if necessary.

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Monitor will not wake from sleep

When my PC wakes from sleep it always used to wake the monitor as well but now when the PC wakes the monitor does not respond. The only way to solve the problem is to do a hard reset of the PC. The PC is definitely waking from sleep. it is just the monitor.

I have read multiple forums trying to find a solution but nothing seems to work. things I have tried:

• updating BIOS
  
• restoring Windows
  
• running Windows Update
  
• trying a different monitor
  
• checking monitor settings
  
• turning off Fast Startup
  
• Running Troubleshooter Power
  
• turning off Link State Power Management
  
• Restarting in Safe Mode
  
• Updating and Rolling Back the display adaptor
  
• checking that keyboard and mouse can wake the PC
  
• probably a few more that I have forgotten
  

Asus PN51

Windows 11Home 64 bit

AMD Ryzen 7 5700u

AMD Radeon Graphics

Any suggestions gratefully received

 

2nd monitor 'missing' on wake after sleep

Running Win10, 64-bit on PC; verified latest nVida driver for EVGA GTX-960; using two monitors in expanded desktop:

When waking from sleep mode, only one monitor displays, all items crammed into it AND resolution changes, not to the monitor's default--have to run detect to (re-)find 2nd monitor and re-normalize desktop. This did NOT happen when running Win 8.1. No changes
to hardware configuration since upgrade. ???