How to solve the black screen after win8.1 upgrade

1, has upgraded to Win8.1 and appears to start black screen blue screen, into safe mode uninstall graphics driver;

2, after the correct drive, press and hold the "power button" to maintain about 5 seconds, the system shutdown, press the "power button" will be the computer boot;

3, repeat the above steps many times, the recovery interface, select the "Advanced Recovery options-Troubleshooting";

4, in the advanced options, we can see System Restore, System image recovery, automatic repair, command prompt, startup settings, and other options, here we choose "Start settings";

5, into the WIN8 system "Startup Settings", we can see the specific description, which contains the "Enable security mode" of this item. Click on the "Restart" button. Select Enable secure mode or enable secure mode with network connections;

6, restart into Safe mode, the right mouse click "Start Menu" select "Device Manager";

7. Uninstall the Intel and AMD display card drivers in the Device Manager.

8, complete the above uninstall steps, Login notebook brand official website update applicable to your model of win8.1 graphics driver.