So I went to sleep and my computer was just fine, just sitting there being normal as normal gets. I wake up and the cursor is beachballing, no response from anything, holding power button doesn't do anything, so I unplug it. Now when I turn it on it goes to the gray screen with a folder with a question mark blinking. Google told me that this means it can not find the startup disk, and my hard drive is probably toast... Upon advice of forums I grabbed my snow leopard install disk and am going to attempt a boot from disc after work today. If this does not work is it safe to assume I need to replace the hard drive? Computer is out of apple care so this will be a DIY operation... Computer: 24" iMac, 2.8GHz core 2 duo, 4gb RAM. Questions: - What risks are involved with taking apart the iMac? What tools would I need? - After I install a new hardrive, is it as simple as simply popping Snow Leopard into the disc drive and going from there? - While I have it open, does anyone know if this model iMac has room for more RAM? Thanks a ton guys. Looking forward to some good responses to help brighten my terrible day.