In another post, Mac beeps on Startup, we list the various beeping noises a Mac will make when a fault is detected in the Power-on self-test (POST). In this article we will describe just what those beeps mean and what to do about them. Usually when this occurs the computer will not start and you’ll [...]

When you turn the computer on, it performs Power On System Test (POST), checking and initializing the system’s internal components. In the event of a system error, the computer emits a series of long and short beeps. Beeps are your computer’s way of letting you know what’s going on when the video signal is not [...]

What do the beeps during the Power-On Self-Test (POST) mean?

by UberGeek316 Is your computer making strange high pitch whirling sounds, or clicking noises? Generally this is an indication that part of your computer is about to fail or has already failed. Warning: Opening your computer can be dangerous if you don’t know what you’re doing. Make sure to unplug your system, and ground yourself [...]