Dear all bro and sis, Hello! This is the first time I've had a major Problem with my notebook, I hope somebody can help me. My MacBook White 5.2 (mid 2009) with OS X Mavericks. Upon power on the computer, 1) the sleep indicator light will flash rapidly for 4-7 times, followed by a long beeping sound (approx 2 secs, non-recurring) before it takes awhile to boot up normally. This is kinda frustrating and worrying. I've checked the online forum and it doesn't match any of those described online. Has anyone had the same issue before? Please kindly offer your advice on this issue.