Win10 technology preview version after the boot black screen solution

There are some user feedbacks using the Windows 10 Technology Preview. The boot takes 30 seconds to a minute of black screen, and sometimes the boot time is up to 4 minutes, which is greater than most people Win10's boot speed of ten seconds. Does not match.

Workaround
It is recommended to try to turn off Quick Launch to see if the problem is getting better.
1. Right click win button, select “Power Options”
2. Click on the right side of the button to select the function of the power button, click “change the currently unavailable settings”
3 Uncheck "Allow fast start"
In addition, it is possible to use 360 ​​or computer housekeeper software to optimize the startup items, so try to restore the startup items. At present, these softwares may not be optimized for Win10. The use of Win10 may cause some inconvenience.