NAV 2012: windows 7 gadget can't go away

Windows 7 Home Premium 64-bit (Greek)

NAV 2012 19.8.0.14 installed (trial)

 

I installed NAV 2012 on my 3 home computers. One of them is a 64-bit platform. On that one I can't get the NAV gadget to go away. Although I am closing it, it appears again after each reboot. Additionally, the gadget seems to be "dead" of sorts, whereas on my other systems it indicated that the system was clean and the keys on the gadget actually worked. On the systems that worked, the keys were yellow, but here they are dark grey.

 

Additionally, trying to add another gadget does not work. I have checked http://www.winhelponline.com/blog/gadgets-not-displayed-correctly-windows-7-vista/ but to avail.

 

Attached is a screen of the gadget, when enabled. Why does it reappear after each reboot and why is it "broken"?