Can you open the DVD drive to insert a disk (see hint below)? If so, insert the original system disk, power down, then press the power button and hold the (alt/Option key) down until you see a blue screen. Any valid OS X volumes should show up in the center...
The original system disk should contain the Apple Hardware Toolkit (AHT), run the long version of the utility (could take a couple of hours-depending on the amount of memory installed). Either way it should tell you if your motherboard, or any hardware is bad or not working.
Hint: If you hold the (right) mouse button down while your machine is starting up, the CD/DVD drive door should kick open and let you place or remove a disk...helpful when you have a bad or uninitialized disk stuck in the tray.
Best Regards.
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by: eazy3333Posted on 2007-12-20 at 00:02:21ID: 20505321
I pulled the video card out of the system now it will boot up and I can hear the mac chime that it makes on startup but it quckly shuts down right after that. Any suggestions?
Thanks