Hello and welcome to TSG.
If you want to make this quick there are 2 options for now:
Option 1:
Using the SFC and DISM to Repair Windows 10 | Tech Support Guy (techguy.org)
If you get errors or issues with these steps, or nothing works please share results.
Option 2:
See which one of the 2 best describes your problem (ignore other possible reasons):
A) "Your PC isn't working well and you recently installed an update."
B) "Your PC isn't working well and it's been a while since you installed an app, driver, or update."
You can find troubleshooting steps for these 2 here:
Recovery options in Windows 10 (microsoft.com)
If you want to make this quick there are 2 options for now:
Option 1:
Using the SFC and DISM to Repair Windows 10 | Tech Support Guy (techguy.org)
If you get errors or issues with these steps, or nothing works please share results.
Option 2:
See which one of the 2 best describes your problem (ignore other possible reasons):
A) "Your PC isn't working well and you recently installed an update."
B) "Your PC isn't working well and it's been a while since you installed an app, driver, or update."
You can find troubleshooting steps for these 2 here:
Recovery options in Windows 10 (microsoft.com)