Win10 boot black screen for a long time how to do

The main reason for the black screen is that the discrete graphics driver is not compatible with win10, the system card is in the boot lock screen and some add-ons. The solution is to go to nvidia official website or your corresponding computer official website to download the corresponding win10's unique display driver, uninstall the original independent display driver, and then install the new driver after rebooting! If there is a set display, you don't have to pay attention to the set display driver.
Software Name: Driver Life 66.3.32.116 Official Edition

Note: Before installing the system, please confirm that there is a win10 independent display driver that matches your computer, and uninstall the original independent drive when you enter the system for the first time. After rebooting, reinstall the new independent driver.
If you don't have a chance to enter your username and password, you'll need to reinstall or experiment a few times until you see the login screen.
If you see the input interface of the account password, first do not enter the account password first, click the power button below, hold down the shift key to restart, then select to enter the safe mode, if you can enter the system, continue to operate, If you can't need to reinstall it.
After entering the safe mode, right click on the windows start menu location, select the power option, select the left side, “ select the power button function & rdquo;
then click on the above “ change the current unavailable settings & rdquo;, mainly It is to enable the following gray options to be enabled. Then cancel “ enable quick start & rdquo; determine save, start again will not be the case.

Summary: 1, windows10 enter the safe mode method is not to log in the system after startup, click the power button, hold down the shift key, click to restart, restart will have a safe mode option
2, recommended, just Once Windows 10 is installed, the Quick Launch option will be disabled immediately, in case you can't log in to the system.