Windows 10: Cannot Detect External Monitor

Hello, I have a Dell Inspiron 3793 with Windows 10, 22H2, 19045.3803.I just finished reinstalled Windows 10 using ISO file from my USB drive. Before the reinstallation, I have been using my external monitor, a Dell Ultra HD 4k Monitor P2715Q 27-Inch Screen without any issues. After the reinstallation, my Dell laptop was not able to detect it. I have checked the HDMI cable and have tried a new cable, still cannot detect it. I tried to install the driver for it, but since it couldn't be detected, I was not able to install the driver. I have done Windows reinstallation before and have no problem

:)

 

External Monitor not detected

I am running windows 10 on a MacBook Pro using bootcamp. I use a imac as an external monitor. Windows cannot "detect" the monitor. using a firewire connection, which works splendidly under OS. Any suggestions?

 

Help! Both external monitors not detecting

Please follow below steps to resolve the message by switching the input source to HDMI: 1. Press "Menu" hotkey on the monitor to enter OSD. 2. Switch the input source to HDMI on OSD in one of the following ways:

• Go to Display > Input > HDMI.
• Go to System > HDMI Auto Switch > On.

 

my acer aspire laptop dosent detect external vga monitor .

Hi Sivaram,

Thank you for writing to Microsoft Community Forums.

1. Since when are you facing this issue?
   

This issue might be happening because of the faulty drivers. That’s the reason you are getting intermittent connection on external monitor.

However, you may try the below suggested steps.

Step 1: Try connecting on a different monitor and check if the issue still persists.

Step 2: Try using a different VGA cable to connect with external monitor and check the status of the issue.

Step 3: Update display driver adapters

You may refer the article
Update drivers in Windows 10 and check the status of the issue.

Step 4: Check for an updated Video driver on the

Acer drivers and Manuals page.

For more information you may also refer
troubleshoot black screen or blank screen errors.

Hope it helps.

Muralidhar

Microsoft Community Moderator