What to do when win8.1 update update black screen

One, may be the reason for the graphics driver

1, you can try to prohibit some useless graphics driver problem is solved. or update to the latest graphics driver. It is recommended that you use the Butler software, prohibit some of the video card boot Startup items will solve this problem.

2, into the Safe mode-with the appropriate old version of the driver-prohibit the driver of Automatic Updates.

3, it is recommended to uninstall the graphics driver, and then drive the wizard installation drive.

　　Second, the account number problem

Enter Safe mode, set up a new account, and try the login for another account.

Step: Keep pressing F8, wait until you choose Safe mode of time, go in, Control Panel, user, new user ...

Warm tip: Small series or suggest that you first use a period of time Win7, after all, Win8 just listed, certainly and the Win7 case, there are many problems. Wait for some time, when it matures, and then upgrade it.