Reset your computer's PRAM Shut down your Mac. Locate the following keys on the keyboard: Option, Command (⌘), P, and R. You will need to hold these keys down simultaneously in step 4. Turn on your Mac. Immediately press and hold the Option-Command-P-R keys. You must press this key combination before the gray screen appears. Continue holding the keys down until your Mac restarts, and you hear the startup sound for the second time.
Release the keys. Resetting PRAM may change some system settings and preferences. Use System Preferences to restore your settings. Cheers, Ronni Sent from Ronni's iPad4 > On 24 Nov 2014, at 8:24 pm, Alan Smith <sma...@iinet.net.au> wrote: > > Hi Ronni > > Absence of the startup chime is intermittent. Chime worked OK when I > restarted Mac to confirm I still had access to the Recovery Disk and then > again to check WiFi signal strength. System sound settings are all normal. > Perhaps a reinstalled OS X will clear it up. > > Cheers > Alan > > >> On 24 Nov 2014, at 7:44 pm, Ronda Brown <ro...@mac.com> wrote: >> >> Hi Alan, >>> On 24 Nov 2014, at 4:35 pm, Alan Smith <sma...@iinet.net.au> wrote: >>> >>> iMac subsequently started up OK. Some “irregularities” noted for future >>> investigation, including no startup Chime; >> >> Check your System Sound is not 'Muted' or turned down too low >> System Preferences > Sound - Output >> Output volume: Check that 'Mute' is not ticked. >> >> Cheers, >> Ronni
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