Check if your HDMI cable is in good condition and properly connected to both ends, i.e., Windows and HDMI devices. The issue could occur due to a simple hardware problem. We’ve shared some quick fixes and troubleshooting methods below to fix the issue. How to Fix HDMI not working on PC/Laptop Issue? Incompatible or corrupted apps installed on your system.There are multiple reasons that may lead to problems with your HDMI port. Why is HDMI not working on the Laptop/PC? The image appears too big on the screen.Television fails to recognize the laptop.The ability to identify and communicate media and devices is called ‘HDMI handshake.’ But when this handshake faces any interruption, the HDMI port stops working, and you may encounter different problems, including: Additionally, you can convert devices into a powerful multimedia hub using these ports. Using these ports, you can project HQ videos and audios onto HD-capable devices, like TVs and audio receivers. HDMI ports act as an all-digital interface that receives and transmits audio and video output signals between two devices. HDMI or High Definition Multimedia Interface includes two parts – (i) the port that establishes the connection and (ii) the connector cable that transmits the data. Troubleshooting Methods to Fix HDMI not working on Laptop or PC.