>>Dear All, I found the solution and tried it myself
>>in summary, keep the minimum ISO to 200 NOT 100, maximum
>to
>>whatever it suits you (3200 or 6400 or 12800, etc.)
>
>The Videos you linked to were about a D700 which has a base
>ISO of 200. The D7000 base ISO is 100. I believe the intent of
>his suggestion from that video link was that while you set a
>maximum ISO via the Auto-ISO menu, you still controll what ISO
>you start at up to the maximum set. So again, with the D7000
>you would be better served by using ISO 100 to start, and set
>the maximum to what you can tolerate noise wise.
>
>Pete

Actually, he faced the same problem when setting it to 100.
Also, it didn't work with me when I assigned it to 100, but worked well with 200.
I don't know the reason, although he described it in his video.
Can you please try it too and update us?