The laptop didn't come with any recovery media and the recovery USB key that I made from inside Windows wouldn't boot so I found that I had to start from scratch if I wanted try again.
I found out that if you're a member of MSDN you can download Windows 8 isos here.
By searching the SHA hash I found a link to this forum page. It contains magnet links to the iso files. By matching the SHA hash on the downloaded file, you can confirm that it is legitimate.
Once you have the magnet link, you can use uTorrent to download the iso.
Download the Microsoft FCIV utility to confirm the file you downloaded is identical to the MSDN version.
The command you run will look something like this:
C:\Users\xxxx>C:\Users\xxxx\Downloads\fciv.exe -sha1 "C:\Users\xxxx\Downloads\WiYou can use ISO Recorder to burn the image to DVD.
ndows 8.1 with Update (x64) - MultiLang\en_windows_8.1_with_update_x64_dvd_40650