Win7 display has no signal but how to solve the sound

The monitor has no signal but has sound

Cause analysis:

1. The resolution setting is too high, the display does not support it;

2. The graphics card driver does not support Compatible;

3, physical card physical failure;

Solution:

First, the resolution setting is too high, the display does not support can be solved according to the following steps:

1, touch the black to set up Dafa: (although you can not see but can operate)

Your monitor may not support your current resolution or refresh rate, advanced desktop and then right click on the blank space Press c, then press the tab key twice, then press Enter, then press the arrow keys ↓ five times or more, and finally Alt+A. At this point, adjust to the lowest resolution, then try one by one. I have encountered this problem and it is also solved. As long as your graphics card is not broken, the monitor is not broken, so it is generally OK.

2, the above method does not work, restart the system, then press the F8 key, enter the VGA mode (low resolution mode), and then set a lower resolution to save, enter the normal mode, then Set a correct resolution.

Second, the graphics card driver problem

1, press the F8 key to enter the safe mode;

2, in the device manager, uninstall the graphics card driver.

3, after uninstalling, reboot into normal mode, and then use the driver wizard to install the appropriate driver for the graphics card.

Third, the physical damage of the graphics card
Some faults are that you can not boot the graphics card can be normal boot, as long as a driver can not start properly after installation, for such graphics card, we can only repair or replace the processing .