so i was about to go home for christmas break, planning on droppin some cash to buy an engagement ring, and the night before im gonna leave i go to turn on my mac, and it wont boot up. here's what it does push power button, grey screen comes up, login sound plays, but instead of seeing this is see flashing into the circle with a line through it, and everyonce in a while a folder image. i have no idea what this is, and i dunno what to do. i took it to the local apple certified store (not apple store but certified mac people) and he told me it was 90 bucks to diagnose, and if its hardware 90 plus the cost of hardware. \ so to save money that i desperatly need i am asking for help. anyone know what this is???