I generally use a second monitor via an HDMI cable while working. However, it stopped working today.

I checked these:

  • Windows cannot detect a second monitor when HDMI cable is connected to the second monitor.
  • HDMI cable which I use works if another device is connected to the second monitor.
  • My computer detects my HDMI-to-VGA converter through HDMI port.


My computer runs Windows 10 Home with latest updates installed.

I suspect this is due to a driver error. How can I fix this problem?