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Send your laptop to us and we will diagnose the...
Do you even have a sound card, or is it on-board sound? (i.e. on your motherboard)
What motherbaord and sound card do you have?
And is it a branded pc (Dell, HP, something like that) or did you have it built costum?
Need to know what sort of sound card it is... you can look in the bios if it's not listed in the Device Manager.
You can contact me via www.otbtechnical.com or www.crossloop.com/The_Doctor and I can look at it and help you out ...no charge if you need further help.