It sounds like you are not using the win.ini patch for using the adapter.
When you are using this adaptor you will need to tell the computer so that it recognises that it is there. To do this you need to insert the following patch into the win.ini file:
You should insert the patch on a new line and exactly as written above. When you have done this, save the file and exit. The Picoscope software should now recognise the adaptor and report "Use Adapter" in Help | About. The ADC-100 should also now be functioning normally.
If this does not help or if you need further assistance, then please do not hesitate to contact me again.
Michael - Tech Support
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