Hello, my macbook air is extremely slow when I boot it. The laptop itself will not boot unless I put it into a direct power supply, and when I do, it takes a good 10 minutes to load. After it loads, it takes up to a hour to log in and I really can't run any applications due to the extreme lag...
I have a iPhone 6s. My friend has a Samsung. I would like to add her to a group message on iMessage. When I try to add her, my phone tells me that she is not registered with iMesaage. Please help me!!!