When the BenQ monitor is connected through the HDMI interface and displays' cable not connected ', it may be caused by various reasons. Here are some possible solutions and troubleshooting methods: 1. Check the HDMI cable connection
Confirm secure connection: Ensure that both ends of the HDMI cable are securely plugged into the HDMI ports of the computer and monitor. Sometimes, cables may not be fully inserted or loose, resulting in signal transmission failure.
Check cable quality: If the cable appears damaged or aged, try using another known good HDMI cable for testing. 2. Check HDMI port
Confirm that the port is normal: Check for physical damage or foreign object blockage on the HDMI ports of the computer and monitor.
Clean the port: If there is dust or dirt on the port, gently wipe it with a soft cloth and avoid using damp cloths or chemical cleaners. 3. Check monitor settings
Input source selection: Ensure that the input source of the monitor is set to HDMI. Usually, this can be adjusted through the menu buttons or control panel on the monitor.
Resolution and Refresh Rate: Ensure that the appropriate resolution and refresh rate are selected for the monitor in the computer's display settings. Mismatched resolution and refresh rate may result in signal incompatibility. 4. Check computer settings
HDMI output: Ensure that the computer's HDMI output is enabled. In the Windows system, you can press the 'Windows+P' key to select the display mode; In Mac systems, you can check the display section in the system preferences settings.
Driver: Check if the graphics card driver of the computer is up-to-date. Outdated drivers may cause HDMI connection issues. 5. Try other devices
Test HDMI cable and ports: If possible, try connecting the HDMI cable to another device (such as another computer or TV) to rule out the possibility of cable or port failure.
Test monitor: Similarly, try connecting another device to the monitor to check if there are any issues with the monitor itself. 6. Restart the device
Restarting the computer and monitor: Sometimes, a simple restart can solve temporary connection issues. 7. Seeking professional assistance
Contact technical support: If the above steps do not solve the problem, it is recommended to contact the technical support team of BenQ Display or professional computer repair services.
When the BenQ monitor is connected through the HDMI interface and displays' cable not connected ', it may be due to issues with the HDMI cable connection, port, settings, or device malfunction. By gradually investigating and testing, the root cause of the problem can usually be identified and resolved.