Is it necessary to adjust the refresh rate for the HDMI cable?

The possible causes and solutions for an HDMI cable to be disconnected are as follows:

Connection issue: A loose connection of the HDMI cable is a common reason for it to be disconnected. One should check if both ends of the HDMI cable are firmly inserted into the HDMI ports of the TV and the computer, ensuring there is no looseness.

Cable quality: Low-quality or damaged HDMI cables may cause unstable signals or disconnections. It is recommended to replace a high-quality HDMI cable to ensure stable signal transmission.

Driver: Outdated or damaged drivers may affect the normal operation of the HDMI cable. One should check and update the drivers of the TV and the computer to ensure their compatibility with the HDMI cable.

HDMI control function: Some TVs or computers have HDMI control functions, which may interfere with the connection of the HDMI cable. One can try to turn off these functions to see if it solves the problem.

Interface cleaning: Dust or dirt on the HDMI interface may cause poor connection. One should use a clean cloth or cotton swab to gently clean the HDMI interface to ensure a good connection.

Although adjusting the refresh rate can sometimes solve the problem of no signal or display issues with the HDMI, it is not a direct solution for an HDMI cable being disconnected. If the HDMI disconnection is related to display settings (such as a resolution or refresh rate setting that is too high causing the TV or monitor to fail to display properly), then adjusting the refresh rate may help solve the problem. However, in most cases, an HDMI cable being disconnected is more likely caused by connection or the cable itself issues. Therefore, if the HDMI cable is always disconnected, it is recommended to first check the connection and the cable itself, and then consider other possible solutions such as adjusting the refresh rate. If none of the above methods can solve the problem, it is recommended to contact a professional repair person for inspection and repair.