Microsoft ergo 4000

Hey,

I am having a rather annoying problem with this keyboard every time I use the arrow keys it will display different windows. (down shows coding, right opens the left click menu, up zooms. Also the c,z,period,comma and f10 f11 f12 keys open different things. c-opens IE/Firefox, x-goes to home, z-goes back, period-./, f10-comma, f11-backspace, f12-end.

In device manage it shows the following if I disable the one of the hid devices i can type somewhat normal but still the arrow keys don't work. Im guessing its a hardware issue or conflict somewhere but have tried everything I know off.

unistalling drivers
deleting reg keys
updating drivers
changing ports
Reinstalling xp-worked for a bit then started again

The keyboard works and types perfect on other computers and it is a wired usb keyboard.

So only thing I can think of is its a conflict or some sort of nasty malware/virus infecting the usb ports, your thoughts???