iMac won't boot up past Grey Screen.
I just got my 24" iMac back from being repair of a Video Card problem. All was well until i thought of installing Windows XP on my computer via Boot camp, I partitioned the hard drive and gave the XP 15 Gigs worth. I inserted the Disc, the computer then shut down ( Which i believe was normal ) and then came on with a blue screen titled, "Windows XP Setup". It continued to install a bunch of things until it came to the part where i was to choose the hard drive to save all this too. I was becoming scared of the idea of this so i pressed the cancel key (I think it was Esc)thinking i would just do it later when i got more info on it. The computer then restarted and when it turned on it made the Mac osx sound then the grey screen comes up. Thats it! No Apple logo', no kernal panic, nothing.
Now i managed to get the XP disc out but when i inserted the "install disc 1" to run disk utility while holding C when booting i get nothing. I hear the cd drive make some noise but i get nothing but a grey screen. I have tried to put it in target disc mode, Safe mode, Single user mode, Verbose, and i tried to hold down the Option key as well.
I'm Willing to try anything to solve this. Anyone have an answer to what could be wrong? I thought it might have been the HD but why wont it let me boot from the CD? If its the Firmware then i don't know where to go from here. (I also tried to take out the Power Plug, the mouse and the Keyboard for 15 secs then to plug it all in and try again... nothing but the grey screen)
Thanks for taking the time to read this.
-Josh
iMac 24' Intel, Mac OS X (10.5.6)