Edit: After half day, my wife’s Mac started having the same problem. I have then applied the solution that I found in the Apple
Black Friday: ?100 Off Macbook Air Via Apple Retail Stores & Online
Black Friday is finally here and Apple has just update the online store with their Black Friday deals. Apple is offering ?81 off the Macbook Air product range which means you can now pick a Macbook Air up from ?768 .
Most Black Friday deals are in store only but Apple allows you to order offline and also you can take your chances and head in to your local retail store were the prices will be the same.