When I turn on my computer it goes strait to a grey screen with the apple and starts a low beeping. The beeping does not stop so I rebooted it several times and everytime it turns back on, it starts to beep again.
What could be the problem?
iMac
iMacs use the tones to indicate a hardware problem - it could be firmware or memory. The pattern of the tones is important - how many between pauses. Can you describe that?
The beep is low and beeps three times before a slight pause. The computer turns on and makes the start up sound but then goes straight to beeping.
I have not removed the RAM/memory; could that be a problem?
Its memory has failed an integrity check and probably needs to be replaced.
Memory is user-replaceable, and most reputable manufacturers have a lifetime guarantee. If it's the original Mac's memory, and no longer eligible for AppleCare, you might have to pay to replace it but memory is not terribly expensive.
Read here to determine how to replace it:
iMac (Late 2009) and later: Installing or replacing memory
Before giving up on it try removing and re-seating the modules.
Buy memory from OWC / MacSales or Crucial.
My imac is making low beeping noises when I turn it on and wont go past a grey screen; whats wrong?
