Allowed maverick updates now my screen is black with a cursor. Tried holding shift key on start up but it went black again and now no cursor???
My imac has a black screen with cursor after i allowed maverick updates. I tried holding shift key during start up and at first it looked like it was going to work, then it turned black again. What do i do?? Thanks in advance!
iMac (21.5-inch, Late 2013), iOS 7.0.1
