Thanks for the advice, I'll try a repair install and if that doesn't help I'll reformat....again!
**UPDATE**
Help!!! I did a repair install but now for some reason my copy of Vista isn't authenticating as genuine when it is! I waited till my pc booted after the repair install before putting my key in but now I have a message in the bottom right of my screen saying THIS COPY OF WINDOWS IS NOT GENUINE!
The problem I had with sound is fixed, but it seems kind of irrelevant now compared to a genuine copy of Vista losing authenticity for some reason.
**2ND UPDATE**
Did a phone activation then rebooted. The "...not genuine" message has gone from my desktop. Appears to be fine now.
Thank you for all your help!
