After the HDMI monitor is connected and the power button is pressed, there is nothing displayed on the monitor
1. Perform cross-verification with other HDMI cables or monitors to rule out the problem of the HDMI cable and the monitor;
2. In case the user has confirmed that both the HDMI cable and the monitor are normal, the problem may be regarded as an issue of power-on failure with the light on.
3. Perform a system reboot to see if the problem can be resolved and rule out system problems;
4. If the problem still exists, you may consult customer service offline to upgrade the system.
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