I am desperately in need of some advice here.
I am currently using an Acer Ferrari 3000LMi with XP Professional. Recently, I have been having some audio issues with the system that eventually resulted in my mic & headphone jack going bust, which proved to be very troublesome as I use them for my Skype calls.
I purchased a VZTec USB Sound Card in an attempt to circumvent the possible audio hardware defect in my system. It worked -for one day. The next day, it went silent. Upon checking, the device was listed as a USB Sound Card in my Device Manager, whereas the previous day, it was listed as C-Media USB Headphone (or something).
I've tried, repeatedly, to uninstall the driver and let the device reinstall itself (plug n play, it claims) but the situation remains. Search fora VZTec support site proved fruitless, but there were several C-Media Support site. Unfortunately, I have downloaded all the drivers on the site and none of them made any difference (I wasn't sure on the chipset on my device, hence I had to try them all).
Hardware testing by Windows' inbuilt tester showed that the USB card is functional, and I could even see the green LED blinking when I play a media file. In addition, my onboard speakers continue to function as per normal, but owing to the low quality onboard speakers and malfunctioning onboard mic, it is not practical to use them for Skype. Hence the need for the the external USB sound card.