I have a really strange issue with my macbook. If i shut down my macbook completely, when i turn it on again, it says No Airport Card Installed. So i went to my shop and the guy said it was disconnected. So he fixed it. This morning, when I turned it on again, it said No airport card installed again. So i called in and apple said it was a hardware issue. So 5 minutes ago, i did a shut down and bam, the airport card is back again. Has anyone experienced this issue? Thanks in advance.