Firstly, shut down the “Mac” on and then press the power button till you see the Apple logo and hold down the “Command, Option, P and R” buttons. Just hold the keys for about 20 seconds and then check up the startup disk, Display and date and time window of System Preferences window to make the changes pram on MacBook air.
Engaged in business and social networking. Promote your brand; Create Funding Campaign; Post new Jobs; Create, post and manage marketplace. Start social groups and post events. Upload videos, music, and photos. Explore the possibilities #BlacksNetwork
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