So a while back I was trying to make my old iMac G5 run a little faster so I deleted a bunch of files. I was stupid and did not know what any of them were. So I turned off the computer and now it will not boot. I have tried inserting a retail mac osx install disk 10.5.6 and it sounds like it is trying to read but it sits at the apple logo screen with the spinny thing for a while then goes to the blue screen and does nothing. Is there any way to fix my computer? Edit: Now it has gone to a grey screen with a spinning beach ball and still sounds like it is trying to read the disk. And if I dont use the install disk it turn on and says a bunch of words on the screen like panic(cpu: Unable to find driver for this platform: "PowerMac8,1". Latest stack backtrace for cpu 0: and a lot more.