My old PS/2 keyboard has finally expired and I have bought a USB replacement. Unfortunately none of my XP/SP3 machines will recognise it - although I have checked on each PC that USB Legacy/Keyboard support is enabled in BIOS.

I must be missing something here, but I'm d****d if I can see what

Can someone out there help please?

The new USB keyboard works fine on another box which dual boots Windows 7 and Linux.