Firmware on Intel Mac computers is designed to be updated if necessary by running the Mac OS X Software Update check (available in the Apple menu) while the computer is connected to the Internet. Important:Whenever possible before beginning troubleshooting, ensure the latest software and firmware updates have been applied.įirmware is the name given to software that is written into memory circuits such as flash memory, that will hold the software code indefinitely, even when power is removed from the hardware. General Troubleshooting Update System Software Wired Keyboard Does Not Function Properly 78 SD (Secure Digital) Memory Card Not Recognized By System 74 SD (Secure Digital) Memory Card Will Not Insert Into Slot 73 Optical Drive Not Performing to Specifications 62Īudio:Built-in Speaker Has Distorted Sound 67Īudio:No Audio through HDMI or Mini DisplayPort connection.
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