No, I am not a dedicated manual reader and have a phobia of such extreme resolution to problems.
My Sony Vaio is a PC. As to the alarm, it has only recenty begun to recur after the installation of a new power supply. It is a persistent high pitched whistle-like sound that goes on for approx 15 seconds. It will them stop but may recur within [every] 10-15 minutes. I hope this helps.