ok... thanks to Brinks article over here: Windows Features - Turn On or Off
I have restored all the Windows Features to default checkboxes and I now have my gadget working.
NOW i will remove one by one till I find it and report back here.
It was in FACT the "Media Features" that I had unchecked and didn't allow the "Computer Status" gadget to work/display properly.
I guess 'Media' in this case means more than WMP, LOL. Yep Media are also HDD's in this case.
ADMIN; Please close this thread. >> SOLVED <<