Need Help – I uninstalled Intel Optane Memory – The message says my computer won’t boot after restart

I uninstalled Intel Optane Memory, believing that would interfere with making a dual-boot system with Linux on a Lenovo Ideapad 330S 151KB (based on a guide). There was a warning message about potential data loss, and a check box to read about it. I checked the box, and selected next. The text file says my system will be unbootable after a re-start. The application uninstall proceeded at the same time it opened the text file. (!!!)

I had made a restore point just before initiating that uninstall. The uninstall window is still waiting for me to initiate the restart. I have made two backups of all my data (not the OS stuff). I really don’t want to have to reinstall Windows, and Office, and all the licenses, etc., etc. The computer didn’t come with a CD/USB with the OS. I realize I can download Windows – I’d have to research how to do that. This is a one-year-old computer that came with Windows 10 (not Office). (I do have Ubuntu on an external SSD, and it has grub on the SSD, not my internal hard drive, so that should still boot fine. I actually made that install with the internal drive physically disconnected.)

Can I undo this? Can I restore to that restore point right now?

Any help is greatly appreciated.

The warning text document – They need to show this FIRST! (That’s unbelievable – they warned about data loss before that, but not about an unbootable system):

WARNING!!!!!!!!!!!!WARNING!!!!!!!!!!WARNING!!!!!!!WARNING!!!!

WARNING: Removing the driver files may result in the loss of 
data on any RAID volumes currently used by the system. Removing 
the Intel Rapid Storage Technology driver from the boot drive or 
bootable RAID volume will remove access to the drive and will 
require reinstallation of the operating system. To preserve data
integrity, backup all data before proceeding.

Proceed ONLY if you absolutely have all your required data
backed up from all single drives and RAID volumes present in the
system and ONLY if you have no need to access these drives or 
volumes after this operation is completed!!! If this is not the
case, please cancel and exit this Uninstall application.

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