Apple Portables: Noise when powering on or waking from sleep is normal

  • Last Modified: October 16, 2008
  • Article: TS2224
  • Old Article: 305070

Symptoms

When powering on or waking from sleep, some components in your portable computer may make unfamiliar noises.

Products Affected

Portable Computers

Resolution

For instance, when optical (even if there is no disc inserted) and hard drives first receive power and make themselves ready for use a whirring or buzzing sound may be present for a few seconds. Additionally, fans in the computer may start off at full speed, but will taper off as the computer continues to start up or finish waking from sleep

Additional Information

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