Hello, I recently took my computer to the Apple store so they could make a diagnostics of my computer and now everytime I start my computer up, in the middle of the screen I have a small world, that flashes. Any tips on how to get rid of it.
Your computer is starting from a NetImage. Press Option key when your Mac starts and choose Macintosh HD to start Mac OS X. Then, open System Preferences > Startup Disk and select Macintosh HD
Because it's trying to find a startup disk on the network. Check the setting in the Startup Disk pane of System Preferences.
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