Take out the sound card, go to the NI site and downlaod latest drivers from the site (though you won’t be able to adjust latency with these). Install the drivers and then, once install is completed and finished, plug in the Audio2DJ and it should work fine.
If you already installed anything, uninstall the drivers first so you start from a clean position.
If you want the official site, type “audio2DJ” in google and the first result takes you to the NI site, where you can click support for the drivers.
Take the USB cable from the Audio2DJ to the laptop out of the laptop.
Go into Start > Control Panel > Uninstall Programs
Find the drivers (may be listed under NI, Native Instruments or Audio2DJ) and uninstall them using the Control Panel
Now, go to the NI site and download the latest Audio2DJ drivers and save them on your desktop. make sure you download the Windows 64 bit version
Run the driver setup from your desktop all the way through until it’s completed.
Once you clicked on “Finish” at the end of the installation of the driver, plug in the USB cable from the Audio2DJ sound card.
It should now work.
To verify that it works, right click on the speaker icon in the bottom right corner system tray of your screen and click on “sounds”. Click on the left tab from the menu that pops up and see if it offer your the Audio2DJ as a sound output.
Alternatively, you could open Traktor, go into Device Manager etc etc to verify that the laptop is picking up the sound card.