Trying to help out a man who closed his business, forgotten password, computer left in hibernation mode unplugged and stored for a year. Win 8, no backups or backup media created. Password reset disk won't work in hibernation environment. No phone or email accounts left to verify MS account (an email address appears on the signin screen above a user, password also forgotten). One of the most frustrating situations I have encountered.
Willing to restore to factory defaults, nothing on computer needed, but don't have restore media. I can use f12 to get to boot mode screen, f8 does not work to get to the recovery screen, nor can I get into Dell Recovery Manager. What do I do to restore the operating system?