Hello richarmb Welcome to the Seven Forums!
With a factory recovery disk that should automatically reformat and reOS the drive for you. That works along with the hidden recovery partition to bring everything back to how you saw the preinstall when first buying the laptop.
Since the manufacturer is actually South Korean with a US product and support site.
Samsung - Wikipedia, the free encyclopedia the default language for non user items would be in the native language and unfortunately not flexible like adding language packs onto Windows itself. You're dealing with hard copy media not an OS already install in that sense.
The only option for a clean install with an English version of the Disk Part tool would be borrowing someone else's 7 dvd and then entering the key on the sticker itself. But you shouldn't even be needing Disk Part with any factory restore option.