ZMERC Keyboard.
 

I have an old zmerc keyboard (KU-0453).
I used this a few years ago with Windows XP.
Now I have Windows 8.1, and the keyboard works, but the software that came with the board no longer works. I have downloaded thew engine from Steelseries.com, but no luck.

Only thing that might work (if you tried Engine2 download and had no luck) is these convoluted instructions
https://social.technet.microsoft.com...itproappcompat (bottom half of thread)

Or possibly doing a full removal / cleanup and trusting http://catalog.update.microsoft.com/....aspx?q=zboard

Which engine did you download? Should be 2, no?
http://steelseries.com/downloads