MacMini locked and is asking for six digit password.
I purchased my MacMini six months ago and it was second hand. The seller advertised it woth latest Lion OS. Two daus ago, while my wofe working on it, it seized operation and is now asking for a six digit code. I tried reaching out to the previous owner but cant locate him. Any idea how i can reset this? I troed calling Apple for help but they are asking 50 dollars to do this. It seams unreasonable for something i already paid for to pay again for resetting my unit. I tried reinstalling the OS by restarting the unit and holding the two keys " Command & R" or other key combinations but i can not get passed the six digit code or the "lock" screen. Any suggestions? Thanks!
Mac mini (Mid 2011), Mac OS X (10.1.x)