Could also be that you haven't got the correct driverset for Ati
https://download.autodesk.com/us/qual...aphics_win.pdf

throw away your prefs , see if that helps.

I used to have an ATI card and i had problems with it, but usually after a restart i could see my gizmo's again.

In the chart you can also see if your card is supported, so you can rule out register stuff etc