Win8 upgrade to win8.1 after the restart into the desktop with black screen, blue screen situation of two solutions

The workaround is as follows:

Method One: Not yet upgraded to Win8.1

1, before upgrading the win8.1 system, first uninstall the Intel and AMD display card driver in the Device Manager;

2, after the completion of the above uninstall steps, and then through the application store to upgrade to the windows8.1 system.

Method Two: has already upgraded to Win8.1 and has appeared the boot black screen blue screen problem

1, press and hold "power button" to maintain 5 seconds to support the system shutdown;

2, press "power button" will computer boot;

3, repeat 1-2 steps 3 times;

4, you will see the recovery interface, select the "Advanced recovery Options"---"Troubleshooting";

5, select "Advanced Options";

6, choose "Start setting";

7, click "Restart";

8. Select "5. Enable Safe Mode with network connection";

9, restart will enter Safe mode, the right mouse click "Start Menu" select "Device Manager";

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