Here are the specs for my particular iMac: http://reviews.cnet.com/desktops/apple-imac-g5-2/4507-3118_7-31355787.html?tag=mncol;psum Now, here is my problem. everything had been running fine for years now. and one day I went to restart it because it was running a bit slow. it shows some strange symbol (being a folder with a question mark in it) followed by the smiling square symbol, which before that time i had never seen before. After that it then booted up normally. The next reboot I did, nothing happend. wont boot up at all. Now I am sure there is more information that anyone who can help me fix this problem would need so youll have to excuse my lack of knowledge on the topic. Basically I am trying to narrow down the issues, which hopefully not to come to the conclusion that it is not the logic board as I am suspecting it is after a few other things I have read. ------------ Now. I got it to power up (via the power button on the inside of the computer, stayed on for about a day then went to use it and it was off and same problem, the computer died out again. cant get it to turn on with the normal power button nor the one inside the computer. Should I expect the Motherboard? or perhaps something else? Id take it in to apple but if its something I can diagnose with the help of some of you and fix myself, it would be much more economical seeing that I am a struggling student.