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Nothing on screen during power up

I replaced the hard drive in this computer. I am not sure I have the right memory in there or not as I have a ton of it laying around. However, I am not getting anything on the screen, no sound and the white light on the front flashes four times then stops.

It does turn on though. Any ideas what the light flashing four times means? This should make it that much easier in figuring out what I did wrong here.

Thanks,

Fred

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Removing the memory allowed me to boot up. Now I have to remember if I replaced the hard drive or not. I sure hope so because that was a ton of work and I already have everything reinstalled.

When I pressed the option key down during boot I got a screen with a x on the Mac HDD. Does that mean the drive is not recognized?

Thanks,

Fred

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The iBook G4 has enough RAM on the motherboard to function, so to troubleshoot whether or not your extended memory is the problem, just remove it and see if the behavior changes.

Is the screen black, or white? If it's white, and assuming the hard drive is blank, you're probably not seeing anything on the screen because the laptop is looking for something to boot from and not finding it. Try holding down the option key as you power on, and this should bring up the option menu, which lets you choose from the available (if any) bootable devices. If this menu appears, that is a good sign, and hopefully you will be able to insert the OS media, choose it in the option menu or by booting holding down "c", and then reinstall the OS.

If the screen is black, try removing extended memory as I mentioned above. Besides that, resetting the PMU and PRAM can never hurt and can sometimes jolt a computer out of a non-functional condition.

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just remove the harddisk and the ram and see if there is any change / improvement

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