Hello again Bookworm
Despite all your best efforts the laptop is still without sound.
I installed the chipset driver, rebooted, reinstalled the audio driver and then rebooted. Still no sound.
I'm going to have to leave it until I come back from two weeks holiday starting this coming Saturday. I shall still be on the internet but won't be taking the sick laptop with me. Maybe I'll have some bright idea in the meantime.
Again thanks for all your help and sorry to have taken up so much of your time.
Regards
Disaster
