I see then, if it didn't work on your main computer and on another computer.
I say its about had it, I know you don't want to get another.
Wholesale Virtual 7.1 Channel USB 3D External Audio Sound Card Adapter, $9.8 | DHgate.com
Show your local store manager this, see if he might have it or order it.
Also this owns most usb audio devices for the moment.
Creative Sound Blaster SB1290 x Fi Go Pro USB Sound Card 70SB129000000 with CD 0054651173736 | eBay
I have one and it does what I need it to for music or audio work.
Check with him and see if he may get some in stock in the next 2 months.
Also ask him for the price of shipping to you.
If he ships it from usa priority mail with signature, it'll cost between 8.00 to 15.00 dollars.