Try each method one by one and see which one proves to be helpful for you. As various factors might cause the problem to your HDMI, thus, there are respective methods to fix all those issues separately. You can try several fixes if your HDMI port not working on laptops. Part 2: What to Do If HDMI Port not Working on Laptop? The content playing through your HDMI isn't playing properly.The audio or video not working through your HDMI connection.HDMI not working at all on your HDMI device.There are several ways in which an HDMI error can play out If your HDMI is not working properly with your Windows 10 system, then it might be a hardware issue, graphic driver issue, device's display configuration issue, or any other issue. There can be several factors behind the failure of your HDMI cable or HDMI port. Part 1: Why is My HDMI not Working on Windows 10? Bonus: What to Do If You Lost Data Due to This Problem?.Configure your Computer's Display SettingsĦ. Set your HDMI Device as the Default Deviceĥ. Part 2: What to Do If HDMI Port not Working on Laptop? ģ.Part 1: Why is My HDMI not Working on Windows 10?.