I have a Dell laptop, had to replace the hard drive, but could not reload windows 10, could not do it as I didn't have the password as Dell never provided it. Phoned Dell they wanted about £300 to provide me with a new copy of windows 10.
I discovered that the passord is embeded on the laptop, so I paid a technician about £20 to extract the password.
On that basis, I would remove the programs individually rather than trying to reload Windows 10, for the reason given above.