I checked the User Manual and it looks like the only thing you can do is set High Sensitivity.
That will set the ISO to a minimum of 720.
Normal sensitivity limits ISO to a range of 80 to 800.
You have no control of ISO other than that.
I have a Nikon Coolpix L100, which unfortunately does not support manual ISO changes. I can only set the camera to a high ISO mode, but no more than that. But if I want to take bright pictures without flash, or change the ISO, is there any way to do so?