How to Bypass an iMac Password (4 Steps)

Press the Power button on the iMac for a second to power it up.
Press down on the “Shift” key immediately after hearing the Mac’s start-up sound.
Release the “Shift” key once the gray Apple logo appears and a spinning “gear” animation is displayed on the screen.
Wait for the desktop to appear on the screen. The iMac’s password has been bypassed and the features of the Mac’s OS X operating system can now be used, although most features will be disabled until the iMac is rebooted normally.
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