Just remember that File History is what it says, FILES. Your programs are not backed up. In order to do that, you need to use the "Windows 7 File Recovery" mentioned near the end of the blog post.
However, there ARE some important differences for "Windows 7 File Recovery" in Windows 8.
First, the recovery partition now has to be 350MB, which is larger than Windows 7 used. If you upgrade a Windows 7 machine and your System Image fails, this is likely the cause. Find a 3rd party tool that can expand it or do a clean install and it's fixed.
Second, the recovery disc is now UEFI boot. This means if you have an ultrabook and don't use optical drives, the "Windows 7 USB DVD Download Tool" Microsoft provided for Window 7 will fail to create a bootable USB Flash drive from your recovery disc for you. Microsoft hasn't bothered to update it.
Speaking of that, can anyone recommend a tustworthy took that can create a bootable EFI Win 8 Recovery USB Stick from the ISO? Anyone know WHY Microsoft doesn't just let us choose a USB Flash drive to store our Recovery Disk to? Let's hope Microsoft realizes it's a optical disc free world faster than they did for floppy drives...