Win10 start menu can not open the message bar can not open how to do

First, the solution after the system restore problem
1, press the Win+R key to open "Run" program, type gpedit.msc Enter Open the local Group Policy Editor;
Local Group Policy Editor
2, adjust to the icon location will be "User Account Control: Run all administrators in the administrator approval mode" is changed to enabled; Br> 3, restart the system, complete.

Second, the use of the start menu and message bar and other functions require a certain account permissions, user account permissions have been modified in three cases, one is virus tampering, one is system file corruption or encounter a bug resulting in failure One is that the user accidentally changed an item to cause the permissions to shrink.
(1) Virus tampering
1 Do not say anything else, first kill the virus. It is recommended to perform anti-virus operations in safe mode.
2 Some anti-virus software will automatically repair the tampering file after the anti-virus is completed. At this time, you can try to restart the problem to solve the problem. If it still doesn't work, please see section (2).
(2) Inadvertently changed a project to reduce the permissions
1 If you can't think of anything, please follow the default configuration in the following steps to confirm the modification of the account permissions to yourself. In the computer.
2 First, as shown in the figure to confirm the modification of the local Group Policy Editor (in the first section introduced the open method) all the "user account control" & rdquo; & ldquo; domain members & rdquo; and “ account & rdquo; Option.
3 Then, right click on this computer, select Manage, and confirm the changes.
4 Finally, restart. If the problem persists at this time, please see section (c).
(3) System file is damaged or encounters a bug
First, follow the section (2). If the problem is solved, you do not need to look at this section.
Then, if you have the iso file of win10 Pro 9926, it will be installed in the win environment, it will give you an option to retain settings, personal files and applications, reduce the re-installation and modify the settings again. The trouble of installing software.
After completing the above two steps, generally such problems can be solved. If, extreme thinking, has not been solved, if it is completely reinstalled from the beginning, please consider whether it is a problem with the system installation file. You can detect that the SHA-1 hash value is the same as the official download page; if it is an upgrade installation, please select the recovery computer in the setup update and recovery recovery without affecting your file or reinstall it completely (both options are required) System iso image file), or roll back to the previous system version. Be careful to back up important files.