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
Apple Reportedly Testing 46" – 55" TV Sets To Show Off At CES 2013
The rumors have suggested we will see Apple release the long awaited Apple Television set in 2013 but a report released today is suggesting we will see the Apple TV in less than a months time at CES 2013
A report released today by Taiwan’s Central News Agency suggests that Foxconn is currently testing multiple designs for the Apple TV. The screen size’s are unknown at the moment but the reports does suggest that the TV’s being tested are between the range of 46 – 55 inches.
The report then also mentions that they expect Apple to show of the new TV at CES which is set to take place next month in Las Vegas but if you know anything about Apple at all this is most likely not the case as Apple is known for not attending trade shows and hold their own keynotes for product releases.