So you ran a reset and now neither work? What type of reset? Full or keep files/settings?
what are details of the PC?
Do you have a win 10 Installer? If not, On another PC, download the
Windows 10 media creation tool and use it to make a win 10 installer on USB
Is there anything on C driver you want to save?
change boot order so USB is first, hdd second
boot from installer
on screen after languages, choose repair this pc, not install.
choose troubleshoot
choose advanced
choose command prompt
type
notepad and press enter
in notepad, select file>open
Use file explorer to copy any files you need to save to USB or hdd
Use that to copy anything off PC you want to save (or at least the boot drive)
I would try a clean install as USB should work after it. Resets often break windows
boot from installer
follow this guide:
https://forums.tomshardware.com/faq/how-to-do-a-clean-installation-of-windows-10.3170366/