Why did Windows 10 fail to upgrade from Windows 7 Home?

[Windows Central Question]

Windows 10 failed to upgrade from Windows 7 Home

I am running Windows 7 Home and received to upgrade for Windows 10 on 8/4/15. It tried to upload Windows 10 but it failed. Then on 8/5/15 Windows 10 was tried to upload again and it failed again. I have gotten nothing since that. I do know that this computer passed when I register for the free upgrade.