i own a 2.1ghz 2gig mac that has been upgraded to 4gigs by an authorized apple reseller. lately i had the 2-3 beep issues so i had my mac serviced and i was told by the technician that they couldn't find any problems so they felt that it was most likely a RAM issue. but since i need my laptop for assignments, the technician loaned me a 2g RAM to support it for the meantime. i just got the grey screen when i switched my mac on telling me to reboot with some foreign languages. from what i've read around, it could be a kernel panic. so i rebooted and i still got the same grey screen for maybe 2-3 times until i got tru the startup screen which is now. could this be caused by the 2g RAM/insufficient RAM? or internal hardware problems because i was told by the technicians that they couldn't find any problems btw i'm new to mac too.
Run hardware diagnostics off the DVD with extended memory test.You may want to try reseating the ram as well.