Mr. Icy

When I try to start up my Mac the sleep light comes on for a couple seconds, turns off for about the same amount of time,...

Hi. I just ordered a airport card for my power mac G4 and I have no clue as how to get it working... I have worked on...

Hi. I Bought a MacBook Air 13" from eBay and found that whenever I try to start it up even with a good operating system on...

I had bought a used for parts duplicate of this laptop and swapped the mother boards out. The problem is now fixed

You need to look at the specs for that model of MacBook Air you are planning on purchasing. It will tell you the maximum storage ssd it will take, which on most MacBook airs is 220Gb. Also make sure if you get a deferent brand of ssd that it fits in the area for the ssd and it doesn't go over the screw hole at the end. Most likely it's a better idea to get a 120 to 220gb ssd from apple to make sure it's compatible. But if you find a ssd from another brand that's cheaper again make sure it fits in the rectangle and doesn't go over the screw hole.

This might be the problem. If you can take the bottom cover off your MacBook Air, there is a small sized board to the right of the laptop when you are looking at the bottom with the cover off. There are 2 wires connecting it to the logic board. One on top which is called a ribbon, and one below it. Take one side of the ribbon of of the board and lift it up so you can see the other wires. Check if there is damage to the wires and or if it's un plugged. I hope this helps!