Win7 wakes up the computer after sleeping but the screen has been black and the screen is not bright

Solution for W7 to wake up the computer after hibernation but the screen has been black and blank.

1. Right click on the desktop “Computer” and select [Device Manager] in the menu bar;

2. Go to the “Device Manager” interface, click to open [Network Adapter] at the bottom;

3. Right click on the local NIC driver and select [Properties] option;

4. Enter the NIC Properties dialog box, click [Power Management] above;

5, cancel the check box in the [Allow this device to wake up the computer] option;

6, set the completion, click to open the computer Below the [Start Menu], find the [Run] option, click to open

7, enter the cmd command in the Run dialog box, click OK, enter the DOS interface

8, enter powercfg on the command line interface - a command, click OK to view the current power usage status