Diamond D5 Wordprocessor

Hi All, Has anyone had any experience with a Diamond D5 wordprocessor? Has anyone even *heard* of such a beast? One was donated to me a while ago after standing unused in a garage for a few years - apparently it was working when it went into store. However, nowadays if I put the system disk into the drive it seeks the heads, spins a couple of times, then all goes silent. There's no cursor or anything on the monitor, but having never seen the machine working myself I don't know if it should display anything at all before a successful boot completes. Basically I'm after more information before I can seriously start thinking about getting this thing going. Obviously I don't even know if the system disks are still good, let alone what sort of hardware faults exist inside... thanks for *any* help with this thing!! cheers Jules