Macbook BEEPS every 60 seconds

[orvn]

My girlfriend's Macbook Pro arbitrarily decided to start beeping periodically.

➭ The sound is a pretty loud 'system' beep.
➭ Each beep occurs exactly 60 seconds after the previous one.
➭ The beeps are not very short. Each one lasts for 0.2-0.4 secon
➭ The beeps are low octave B notes, not that that little factoid would help with anything, lol.
➭ Nothing was being done on the computer when this happened. It was powered on but not in use and running few applications.
➭ Issue persists when Macbook is closed, in sleep mode.

I know Mac's have beep codes, but I can't find a list anywhere to troubleshoot the issue- any assistance would be appreciated, cheers!

 

[Nukemkb]

Did you put in new RAM recently?

 

[Dr Kevorkian94]

Did u change your ram, or drop the computer.

Beep codes:

1 beep = No RAM installed/detected
2 beeps = Incompatible RAM type installed (for example, EDO)
3 beeps = No RAM banks passed memory testing
4 beeps = Bad checksum for the remainder of the boot ROM
5 beeps = Bad checksum for the ROM boot block"

 

[orvn]

Nope, no RAM modifications, no physical trauma, nothing out of the ordinary (and she's rather careful with it).

She hasn't even installed new applications recently, let alone made any hardware changes.

The beeps have stopped now.

I think there were five or six in total, spaced one minute apart. I did not count them explicitly though.

If there's damage to the checksum, could that mean we'll experience issues during the next reboot?

Should I run disk utility from the CD on boot and repair permissions? Or is there a different procedure used to fix the boot record?

Thanks!

 

[msevild]

Wirelessly posted (Mozilla/5.0 (iPhone; U; CPU iPhone OS 4_3 like Mac OS X; en-us) AppleWebKit/533.17.9 (KHTML, like Gecko) Version/5.0.2 Mobile/8F190 Safari/6533.18.5)

the list of beeps provided are during startup only. if it is beeping with unit fully booted or asleep that could be tricky. was the sound coming from the speakers? my guess would be from the hard drive if it wasn't the speakers at which point I might suggest getting the drive looked at if you continue experiencing problems.

 

[orvn]

Yeah, not at all during startup.

The machine was fully running and had been running for that day as well as the previous day without reboot.

Nothing other than system processes and a couple of small open applications (iChat, Safari, Finder) were running. No one was using the computer at the time, it was just sitting there, powered on, when it started beeping.

The beeps stopped after about (unsure) 6 beeps, each spaced exactly 60 seconds apart.