This, just download Ubuntu to a 16gb or larger flash drive. It's simpler to navigate. Most PCs have boot on usb enabled from the factory now. If not, if the HDD is inaccessible it should default. Just because the OS is corrupted doesn't mean you've lost your files, and dual booting into Ubuntu will allow you to check the disk for integrity.
You really don't even need 16gb but that gives you the ability to back up files while you are loaded into it
This, just download Ubuntu to a 16gb or larger flash drive. It's simpler to navigate. Most PCs have boot on usb enabled from the factory now. If not, if the HDD is inaccessible it should default. Just because the OS is corrupted doesn't mean you've lost your files, and dual booting into Ubuntu will allow you to check the disk for integrity.
You really don't even need 16gb but that gives you the ability to back up files while you are loaded into it