In Task Manager, if you click View - Refresh Now, does the list of processes update?
If so, check View - Update Speed, is it set to normal?
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In Task Manager, if you click View - Refresh Now, does the list of processes update?
If so, check View - Update Speed, is it set to normal?
Press Windows + X keys.
Click on Command Prompt (Admin).
Copy and paste the command below:
SFC /scannow
Hit Enter to execute the command. It may take a few minutes to complete. If you find Verification 100% complete, click X to close the Command Prompt.
Reboot the PC for the changes to take effect.
If that does not work, open Start > Settings > Time & Language
Click Region & language
In the Country or region list box, choose United states
Restart then check if Task Manager is working again.
In Task Manager, if you click View - Refresh Now, does the list of processes update?
If so, check View - Update Speed, is it set to normal?
No, update doesn't show anything.
I've done what suggested then I left the pc unattended for a while (about 3 hours) and that issue was there again.
I discovered that if I disconnected and reconnected from my account I solved.
But I don't understand why some times the task manager is empty.
I would recommend you create a brand new local account, backup your files in the old account, then copy them over to the new account.
See if that works.
If not, perform a repair upgrade: