Windows 10: why is my laptop getting these critical error messages and then restarting?

This is a snipit of the critical error message. What is the problem?

:)

 

Critical Error Popup

Hi QUENDALEWARD,

Corrupted system files may be the possible cause why you received a critical error. To provide you the accurate resolution, kindly answer the following questions:

• Have you made any recent changes prior to this issue?
• What is the exact error message you received?
• What troubleshooting steps have you done so far?

Meanwhile, I suggest that you follow the steps in this article on how to troubleshoot
Start menu.

Keep us posted if you need further assistance.

 

Critical Error message that the Start menu isn't working

Hi Patti,

Welcome to Microsoft Community.

I understand your concerned. Let me help you to fix the issue.

To understand the issue better, please provide us more information.

• 
  What is the complete error message do you received?
  
• When exactly do you get this error message?

Let’s try simple troubleshooting steps and check if this helps in resolving the issue. I would suggest you to go to the below link and try the steps provided by Ravinath P

“Critical Error – Start menu and Cortana aren’t working. We’ll try to fix it the next time you sign in.”

Redirecting

If the issue still persist, you can also visit the below link and try the steps.

Redirecting

Hope this helps. Please let us know the status.

 

Laptop no longer hibernates on critical power

Hi Mike,

The laptop's battery is possibly wearing out. Since you haven't change any settings, we suggest that you change the critical battery level a bit higher so that your laptop can perform a hibernation on a much higher percentage than the default. Follow the
steps below:

• Type Power Options on the Start menu search bar.
• Under Battery, click on Critical battery level.
• Chang the default percentage to 10% or higher.
• Click on Apply.

Looking forward to your response.