How to fix the three beeps at start up
My Mac just beeps three times at start up and repeats. Is there a way to fix this? I remember I need to press a few buttons at start up but don’t remember.
iMac 21.5″, macOS 10.13
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Hi Jesustlife,
I take it you have a intel mac?
You might be talking about a PRAM reset, you do this by:
- Shut down your Mac.
- Press the power button, then immediately press and hold Command-Option-P-R at the same time.
- If your Mac normally chimes at startup, hold the keys until you hear a second chime. If it doesn’t, hold them for 20 seconds.
- Once your Mac starts up, check if the date and time are correct.
However, it sounds like your mac has found a hardware problem, take a look at this site to find out what the problem is. If your Mac beeps during startup – Apple Support (UK)
