If the system came with Windows 8 installed, in the boot options, look for a Windows Boot Manger. As Pat mentions, if you have been put in the Recovery process you may see more options. If you are not in the Recovery options, in some cases, booting 3 times or more unsuccessfully will do that. But your situation is a little different from most problems.
When you reset the system, how exactly did you do that? There is a "Go Back to" option in Settings, Update and Security, Recovery you could have used. Or did you use some other option?