Do not Enter sign
Hello, Upon booting up my Macbook Pro, my computer one day I had a do not enter sign on my screen. I did what support on the internet told me to and getting rid of it just isn't working. I get to where the spinning globe in going on the screen, I put in the WiFi password and it goes to the Apple logo but it never makes it to the Utilities screen. It loads one time than goes to another Apple logo and when it's almost done it gets hung up. I tried to reset the computer with Command "S" But after it loads and I try to type in stuff it just sits there and than the wording becomes all scrambled and has the do not enter sign in the background. I am attaching a photo here. I am hoping to fix this. I tried taking it into a repair shop but they don't even know actually what's wrong and wants $300.00 to figure it out and fix it. My Mac has been out of commission for three weeks now. Any help would be appreciated.