Because a Windows 8 update was permanently stuck at 95% this Lenovo Z50 Notebook was replaced and about to be tossed. Managed to get my hands on it just in time.
The problem: BIOS was set to UEFI instead of legacy.
Simply changed that and Bingo!
It now has a SSD and a new life with Windows 10. After going though the usual Windows 10 motions of course to shut it up a bit.