Under Windows, enter the SD card that has been written into the raspberry Pi system and find config.txt (you'd better back this up).

No matter what kind of monitor or HDTV, please reduce the resolution in config.txt

Resolution used by computer monitor:

Hdmi_mode=4 (640x480 60Hz input without the latter)

Hdmi_mode=9 (without the following 800x600 60Hz input)

Hdmi_mode= 16 (without the latter input 1024x768 60Hz)

Resolution of TV specification specified by CEA. ：

Hdmi_mode=2 (without the latter 480p 60Hz input)

Hdmi_mode=4 (without the latter 720p 60Hz input)

In addition: if you use HDMI cable display device directly, please add one in config.txt:

hdmi_ignore_edid=0xa5000080

This is to command Raspberry Pie not to detect any information of HDMI equipment, but to output only according to the resolution we specified.

This will not automatically detect the resolution of the display device, avoiding many factors that may not be displayed, and display according to your own resolution.