8 or 9 beeps, 1second pause and repeated

[Patrick-32]

I was using my laptop as normal, It had been on a bout three hours.. memory was on 2.06gb free 1.93used but out of nowhere it beeped about 8 10? times stopped for a second then done it again, paused for second the many beeps happened 3 r 4 different times, then it just stopped and laptop back to normal

What could this be??

 

[Weaselboy]

https://support.apple.com/en-us/HT202768

Could it be this pattern (from the link above)?

• 3 long tones, 3 short tones, 3 long tones: Indicates EFI ROM corruption is detected and the computer is in EFI ROM recovery mode.

 

[Patrick-32]

it wasn't on start up.. i restarted it thee to check and it didn't happen.

But i thought all the 8 r 9 beeps were similar but maybe they were;t could i get them 3 beeps like above if it happened when i was using laptop and not on boot?