In order for this to work you must enable the “BiosCharacteristics” within the PC Bios class. http://smsug.ca/blogs/garth_jones/archive/2007/03/30/228.aspx
SELECT CS.Name0, CS.UserName0
FROM v_GS_COMPUTER_SYSTEM CS, v_GS_PC_BIOS BIOS
WHERE BIOS.ResourceID = CS.ResourceID AND (BIOS.BiosCharacteristics0 Like ‘% 15,%’)
ORDER BY CS.Name0