Windows 8, Boot Camp 5: MacBook Air (Mid 2012) will not start, or displays low resolution graphics

Windows 8, Boot Camp 5: MacBook Air (Mid 2012) will not start, or displays low resolution graphicsAfter installing the Boot Camp Support Software on a MacBook Air (Mid 2012), Microsoft Windows 8 may not start, or may start with a low screen resolution (VGA) .

">ACUtil.setPOD('us~en'); var articleId = "TS4499"; var ACStaticText = { 'more': '…more', 'less': 'less' };KmLoader.akamaiUrl = 'http://km.support.apple.com';//function sendRead()var locale = 'en_US';Event.observe(window, 'load', function() {ACHistory.addKbView('TS4499', 'Windows 8, Boot Camp 5: MacBook Air (Mid 2012) will not start, or displays low resolution graphics', 'en_US', 'unknown');ACUtil.getMultipleOffers('PL339,PP38,133641,133642', 'TROUBLESHOOTING_ARTICLES', 'en_US', 'false');ACUtil.reportView('TS4499', 'en_US');// Apple Instant Feed statistics code if(enableAppleInstant == "yes"){var store = new Persist.Store('FeedStats');if (store.get('resultActivity')=='true'){var time = new Date();// Fix for /*setReadTimer = setTimeout(function(){var feedStats = new ACFeedStatistics();feedStats.updateRead('TS4499', store.get('position'));store.remove('TS4499');store.remove('position');}, 3000);*///store.set('TS4499', time.getTime());store.set('timeStart', time.getTime());}} });Event.observe(window, 'beforeunload', function(){// Apple Instant Feed statistics code if(enableAppleInstant == "yes"){ var store = new Persist.Store('FeedStats'); if (store.get('resultActivity')=='true' && store.get('timeStart') !== null){ var time = new Date();//var timeDiff = time.getTime() - store.get('TS4499');var timeDiff = time.getTime() - store.get('timeStart');var timeSpent = Math.floor(timeDiff/1000);var feedStats = new ACFeedStatistics();// Fix for if (timeDiff Windows 8, Boot Camp 5: MacBook Air (Mid 2012) will not start, or displays low resolution graphics Products Affected

Boot Camp, MacBook Air (11-inch, Mid 2012), MacBook Air (13-inch, Mid 2012), Windows 8

Symptoms

After installing the Boot Camp Support Software on a MacBook Air (Mid 2012), Microsoft Windows 8 may not start, or may start with a low screen resolution (VGA) .

Resolution Press and hold the power button until your Mac turns off.  Press the power button to turn it back on.  When you hear the startup chime, hold down the Option key until your disk volumes appear in Startup Manager. Double-click your OS X volume (named Macintosh HD by default). After OS X starts, from the Apple (?) menu, choose Software Update. The Mac App store should appear with a list of available updates.  Download and install the MacBook Air EFI Firmware Update 2.6 or later, or manually install it from Apple Support Downloads.

For more information about applying EFI Firmware Updates, see this article.

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