So I'm not really a Mac person but rather PC and seen this guy throwing away a 2006 Mid Year iMac with a descent screen and though heck if anything maybe there is some ram in it I can sell. Well no RAM and no HDD so lets try and get her going. I go and find some SODIMM (2x1GB) sticks and can power it on now and get the blinky ? folder. So hey at least the power supply is good and the RAM I had on hand works maybe. I get a 500GB HDD and throw it in and find a OS X .dmg on DVD. I stick the disc in and it spins up but it just flashes white and goes black. I've got the iMac apart where I can still get to the HDD. I have searched through here about an hour and tried pressing the Alt key while booting and then the C key while booting. (I only have PC Keyboards ) still with the same results white screen of hope then black screen of despair. The only way I can get it to go back to the ? folder is ejecting the CD and removing/reinstalling the CMOS batt. Do I need to partition the drive first? Is there certain steps I have not taken? Could the Power supply still be bad? Thanks for any help!