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Model M7886 / 450 MHz or 500 MHz PowerPC 7400/7410 (G4) Processor

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My Cube can not enter the OS.

The Cube has some parts drop down( sheetmetal, screw ring and screw) when I install the AirPort Card last week.

It just hold the power on in a few seconds to off and restart continuously, it can not enter the OS platform.

You can see the parts' picture at this website.

http://mac.hk/appletalk/download/file.ph...

Thank regards

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I would open it up, and look for any more loose parts, that may be shorting something out, and causing the cube to restart. If this doesn't work, then there is a problem with the power brick, or motherboard/cpu.

Also, try removing the airport card you installed.

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Try Flashing the Image...

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