Hi, So today i took apart my mini (March 2009 2ghz 1gb DDR3) aprt to upgrade the ram. I followed the instructions from ifixits website - all went well! http://www.ifixit.com/Guide/Repair/Mac-mini-Model-A1283-RAM/1058/1 Until i came to boot it back up.... now i just get a beeping tone when occurs every few seconds... nothing is displayed on the my screen... can anyone help please? Why is it doing this.. i was very careful and everything has gone back exactly where it was... HELP me please.... Thanks guys..