1. In the first case, it may be because the resolution set by the win7 system is too high, so that the display cannot be supported and there is no signal prompt. At this time, you can solve the problem by:
Restart the win7 system, then press the F8 key to enter the advanced settings menu, then enter the VGA mode (low resolution mode), and then After setting a lower resolution to save, go to normal mode and set a correct resolution.
2. If the above method can not solve the problem, it may be caused by the graphics card driver failure, the solution is as follows:
Or restart your own win7 system, boot down F8 key, after entering the advanced setting menu, choose to enter the safe mode, after the normal system system, enter the device manager window, then uninstall the graphics card driver, then restart the computer, it should be able to log in normally, after logging in, Use the driver wizard to install the appropriate driver for the graphics card.
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