Macbook unibody - beep codes on boot

[sleepingfaster]

This happened a little before work this morning so I've not really had time to check it, pull out batteries or the usual bits and bobs.

It's a Macbook Unibody 13" about 6 months old.

I'm assuming this is unrelated, but I applied the Safari Update this morning, restarted and now my Macbook won't boot.

The Mac reboots, plays the welcome / boot tone thing, and on the grey screen (prior to apple symbol) starts beeping continually; 1 second beeps (approx)

Can anyone help me out?

Going to go home via the apple store but didn't have a chance to pic up my macbook before I ran out to work.

 

[clyde2801]

There's a couple of different of things it could be. How many beeps are there, and how long are they?

 

[sleepingfaster]

The beeps sound continually. Duration of probably around a second with a second gap then another beep.