just to update you have now got a new mike installed it is working but not as good as it should and also there is no mike boost that is only on the exsternal mike so off to try and install a diff driver will let you lot no how i got on
ok at last got this fixed replaced the with new mic and still was no good it was working just not very well so tryed to reinstall the sigma tell driver but could not install as was getting error message 5009 0x800281d has occurred while running setup the found out how to fix that kb.calyxsupport.com/kb/article.php?id=394 so at last all fixed
I too have a dell m1530 with windows vista. My laptop will not recognise the internal mic and i really need it for skype. I have uninstalled the sigmatel driver software and reinstalled and still no recognition. speakers work fine.
Anyone able to help as this is really fustrating.