Windows 10: Dual Monitor Slows My PC

Since October 2021 my PC performance slows down when I use dual monitor my PC performance becomes slow then I plugged off my second monitor and never use dual monitor again from my pc but as the time goes by... My PC performance becomes worse. My pc is really slow when I turn it on/restart then i check my : 1. CPU speed, usage, and health 2. RAM usage 3. Disk usage 4. Network usage 5. Hard Disk usage and healthBut nothing has high usage and suspecious so I tried to :1. Full Virus Scan using Windows Defender yes real time protection is active 2. Disk Defragment 3. Disk Cleanup 4. Cleaning Tem

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Setting up dual monitor on PC

Hi,



Thank you for writing to Microsoft Community Forums.



I understand your query related to connecting external monitor to the PC.



Usually, you will receive an error when connecting external monitor when the cable is not connected properly. I would suggest you to follow the suggestions mentioned in the article

Troubleshoot external monitor connections in Windows 10.



Additionally, you may want to refer the below articles

• Set up dual monitors on Windows 10
  
• How to Setup Multiple Monitors in Microsoft Windows 10
  

Let us know how it goes.



Regards,

Prakhar Khare

Microsoft Community – Moderator

 

Dual monitor, Dual mouse??

Hello,

Please share this information to assist you better.

• How have you setup dual monitors?
• Are you referring to use 2 different mouse/keyboard with the dual monitor setup?

If yes, the mouse or keyboard may function same as one another. Since, it has to be connected to single PC/tower.

However, setting up 2 different mouse/keyboard with the Dual- monitor setup, it may not function separately for each monitor.

Let us know the status of the issue. We will assist you further.

 

Dual Monitor Setup & Speakers

Hi,

There are several factors which could prevent your dual monitors and your speakers from working properly. In order for us to effectively assist you with your concern, we just have a few questions for you:

• Are you getting an error message/code when trying to run the dual monitors?
• Have you tried running the hardware troubleshooter?
• Have you tried running the System File Checker tool?
• What troubleshooting steps have you already performed?

Regards.