Hi Stacy,
Thank you for posting your query on Microsoft Community.
I understand that you are facing issues with Windows 10.
This issue could be due to corrupt system files.
In order to help you better, please provide the below information.
-Have you made any changes to the Computer prior to the issue?
Step 1: I suggest you to perform Deployment Image Servicing and Management of the Computer and check if it helps.
1. Right click Start Menu.
2. Click on Command Prompt (Admin).
3. Type the below command and hit on Enter Key:
dism /online /cleanup-image /restorehealth
Step 2:
I suggest you to perform the Windows Update troubleshooter
and try to update Windows 10.
Follow these steps to run Windows Update troubleshooter.
1.Press Windows key + S key and type troubleshooting.
2.Select Troubleshooting.
3.Select View all on the top left corner.
4.Run Windows update troubleshooter.
Let us know if you need further assistance, we will be glad to help.