The start menu of 1 and Win 10 cannot be opened. Click the start button of Win 10 and there is no response. You need to select the run option to enter, and the UserManager service properties dialog box will pop up. Click the service status stop button, and then click the start button. On the desktop of win 10 operating system, right-click the start button and select the run option to enter.

2. Restart the computer: Sometimes you just need to restart the computer to solve the problem. Check for updates: Make sure that your Windows 10 system is the latest version and the latest updates are installed. You can press Win+I to open the settings, and then select the "Update and Security" menu to see if there are any updates available.

3.Win 10 system start menu solution 1: Ctrl+Alt+delete calls up the task manager, ends the desktop window manager process (desktop disappears), then clicks file (F)- new task in the upper left corner, and enters explorer.exe to confirm (desktop appears).

4. Update and security. Click Restore. Find it on the left, and then click the Start button at the bottom of Reset this Computer.

5. Right-click the "My Computer" or "This Computer" icon on the desktop, and then click "Manage" in the pop-up list. 2. Enter the computer management window, click Services and Applications → Services, and many service names will appear on the right.

6. First, on the Windows 10 desktop, right-click the start menu and click Run. Then enter the command services.msc in the window and click OK. Then in the service window of Windows 10, find the UserManager service item in the service list.