On Windows 10 and 11, you can use these steps to fix a second monitor not detected on your PC, and here's how.

Use the following fixes if the second monitor is on, but there is no display on Windows 11/10. First of all, try some basic fixes and see if they help you resolve the issue. Check your cable: First, ...

If BIOS is not showing on an external monitor while using a laptop or desktop computer, here is how to fix the issue. You might often need to change settings in the BIOS to make things work for you.