Macbook air start up screen frozen
My Mac suddenly just won't work properly. I turn on my macbook air and makes that start up sound, brings up the apple logo and the mouse icon apperars and you can move it. The track pad is working fine. But it just stays on the gray screen with an apple logo sign. It doesn't continue to the login screen. What do I do? My mac usually turns on in like 12 seconds, now it's taking longer than half and hour.
MacBook Air, OS X Mavericks (10.9)