You must enable the audio driver for the Audiobox interface from Cubase setting. The computer's sound card has nothing to do with recording. Audiobox does, so make sure you enable in the settings area, and select when you are choosing your input device. Also, try this: Google your sound card name and download the latest driver.
to see sound card info, do this:
Start - run - type " Dxdiag " - click yes - go to sound tab


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