Hi guys, first time doing anything with an apple so be gentle Next door neighbours daughter bought a macbook air (don't know what model sorry) from cash converters interstate. Came up here to visit her rellies. She admits shes 'played with settings' and now its 'locked and she can't unlock it/doesnt know what the password is'. Shes currently trying again to see if she can unlock it. We are wondering if a format and reinstall of the o/s will reset the password. There is no personal data etc on the device, and she has all the receipts etc to prove her story. CC in her home town offered to wipe/reinstall/whatever for $50, but she didn't have the time before she had to leave. Im assuming she has no install discs (or is it on a recovery partition ?) So if format/reinstall will work, can I download a fresh o/s from apple ? It has the serial number but I haven't noted it down as yet. Thanks.