For SoundBlaster 16, there are drivers for Windows XP and are even included in the delivery. Windows 7 does not contain such a driver. Moreover, ISA PNP in Windows 7 is disabled by default (and as a result, the device is not recognized on the bus). However, Microsoft provides a solution to enable the legacy ISA bus for Windows Vista, and it works the same on Windows 7. After these modifications, the SoundBlaster 16 appears in the device list, but with an exclamation point (because there are no drivers in Windows Vista+). However, as you know, these drivers are in Windows XP!
The attachment SB16_ISA_Win7.PNG is no longer available
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There are quite a few cases when WDM drivers for PCI sound cards were successfully ported under Windows Vista, usually by modifying *.inf files of the driver and adding some libraries missing in the distribution. And it works. Both in Vista and Windows 7.
Based on the foregoing, it is logical to assume that for SoundBlaster 16, theoretically might exist a Windows 7 compatible driver (unofficial, modified), ported from Windows XP.
However, unfortunately, the search for a similar driver, at the moment, has not led to success.
And I would really like to have a working SoundBlaster 16 also under Windows 7...