VGA cable, DVI cable, HDMI cable, and in addition, there are uncommon DP cables.
The solution is as follows:
1) Turn on the machine and wait for it to bake at its own temperature, or use a hair dryer to blow it;
2) Stay away from magnetic objects and do not turn off the computer without the monitor.
3) Check if there is a problem with the display wiring, press the interface tightly, or replace the data cable;
4) Reinstall the graphics card driver or repair or replace the graphics card, but the likelihood of a graphics card problem is generally low.
Poor quality connecting wires do not have electromagnetic shielding function or are damaged, resulting in electromagnetic interference to the display.
This type of problem is often caused by graphics cards, and may be due to poor quality or incompatibility of the cards. Additionally, the correct driver has not been installed yet. If it is an old card and graphics memory is added, it is possible that the newly added graphics memory and the original graphics memory model parameters are different.