factory reset after upgrade to windows 10 1809

[RayMac20]

system 8.0 windows. update to windows 10 now has crashed it just keeps restarting F11 not working dvd drive spins but nothing else

[CherylG]

Often upgrading to Windows 10 corrupts the recovery drive and you lose that function. That is why it is best to always make your backup Recovery Media before upgrading. Your hard drive could also be failing.Have you run any Diagnostic tests?

Immediately after powering on start tapping the Esc key. This will open a menu where F2 System Diagnostics is an option. Tap F2 key and run the tests.

With the upgrade to Windows 10 you were assigned a digital license key stored on Microsoft servers.You can reinstall Windows any time. Microsoft provides the free Media Creation Tool to download files and create a Windows 10 usb flash drive.Advantage is you will have latest updated version of Windows 10. At least 8gb flash drive required:
https://www.microsoft.com/en-us/software-download/windows10

Select Download tool now,save it,then Run.
If you agree to the license terms, select Accept.
On the What do you want to do? page, select Create installation media for another PC, and then select Next.
Select the language, edition, and architecture (64-bit or 32-bit) for Windows 10.
The Guide here shows the steps.Pay attention to Step 5 if you will be using another pc:
https://www.tenforums.com/tutorials/2376-create-bootable-usb-flash-drive-install-windows-10-a.html
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When the flash drive is prepared insert it in a usb port. Power on the laptop and immediately start tapping Esc key. From the menu tap F9 key and use the arrow keys to move to and select usb. Tap Enter key.
When installing and you go through first few screens- choose Custom and select each partition and delete each (if you have more than one).Install on the unallocated space left from that process.Continue with installation.If it asks at any point for a license/product key just choose "I don't have a key". It will continue and should activate once you are online.