The most common is that you can open the Task Manager by right-clicking the Task Manager on the taskbar or pressing the Ctrl + Alt + Del key combination. What if these methods cannot be opened?
Procedure:
1. Click the Start menu and enter gpedit. msc in the search box.
2. Press Enter.
3. Open the local group policy editor.
4. Expand "management template" under "User Configuration ".
5. Double-click to expand "system ".
6. Select "Ctel + Alt + Del ".
7. On the right panel, double-click to open the "delete task manager" configuration.
8. Change the setting to "not configured ". ("Not configured" by default ")
9. After the change is complete, click OK.
10. Restart the computer.
11. In this way, the task manager cannot be opened.
The solution to Windows 7 cannot open the Task Manager is described in detail here. When the task manager opens, it may be caused by system faults or Trojans. You can also try the above method!