On the subject of booting before OS
I use a Microsoft Bluetooth keyboard and mouse with the supplied dongle, and can access bios fine as long as I press a key on the keyboard 1st and wait a sec or 2 to give it time to power on before switching pc on then press esc to get to bios, works fine every time (including the boot menu)
it doesnt work with by belkin dongle so now i use both, I hope this is the same with this, as ive just ordered one
