Thanks for the feedback ... out of 5 speakers and a sub I only get 3 ... all leads in the right place and all setting in audio console is correct ..when I test centre speaker I get nothing same as the sub .. it is set to 5.1 and has the latest driver .. I am very familliar with setting but all utilities for SB are greyed or not there ..I have installed just the driver from the pack as advised ...speakers are not faulty as they worked on XP and Vista before ... strange...the computer I am testing has a win7 Ultim.but got a sound max on board .. probably I have to uninstall that.. I will give it a go and keep you posted... thank you all.