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Richard
Richard, Software Engineer
Category: Microsoft
Satisfied Customers: 40175
Experience:  Over 15 year experience resolving Microsoft Office Issues
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I have upgraded from Windows 7 to Windows 10 on my desktop

Customer Question

I have upgraded from Windows 7 to Windows 10 on my desktop pc. On trying to log in I am now getting a screen which says "CRITICAL ERROR Start menu and Cortana aren't working. We'll try to fix it next time you sign in" but, after several attempts, I am still unable to log in and use the computer.
Submitted: 2 years ago.
Category: Microsoft
Expert:  Richard replied 2 years ago.
Thank you for your question, my name is ***** ***** I look forward to assisting you.
Can you restart the computer but on the log in screen, do not sign in but hold the shift button then click on the power icon and click restart (still with SHIFT held down) until it has restarted and you are put into a menu.
Then click on Troubleshoot, then advance and choose System Restore
Follow the onscreen steps and perform a restore from the last restore point.
When this has completed, tell me if the error still appears.
Let me know the results please
Richard and other Microsoft Specialists are ready to help you
Customer: replied 2 years ago.

I can now get into the computer but when I click on programmes pinned to the taskbar they fail to load

Expert:  Richard replied 2 years ago.
Is there a specific error? Or just nothing opens?
Customer: replied 2 years ago.

I have only tried to open one programme and the screen has gone blank. The cursor still responds to mouse movements but nothing else is happening and I cannot get back to the desktop.

Expert:  Richard replied 2 years ago.
restart the computer and then try a few programs.
Let me know the results please
Customer: replied 2 years ago.

Thanks Richard This seems to have cured the problem although the computer is now running much more slowly than before.

Expert:  Richard replied 2 years ago.
It will likely be installing updates in the background.
Let it sit for 1/2 hour and see if this improves it.
Try restarting again after this.