Hogo.

Looking at your screen shot it seems that you have the GTC and the ATM started OK, the gauges are showing voltage and the GTC bleed air switch is on OK, the battery switch and dc bus switches are in their correct positions.  I do not understand why you cannot switch on the wing isolation and the engine bleed switches.  If the mouse works on the GTC and ATM switches it should also work on the rest. I will try to duplicate your problem on my computer by trying different procedures and see if I can find the answer.  Will get back to you soon.
John.