Anthony Kimmons wrote:
> Hi there folks & thanks in advance for any advice you may have! Looking
> forward to learning a lot here...
>
> I just bought a 400 mhz G4 AGP, 10 gig HD, 256 ram, off ebay (with OS 9
> loaded) and have gotten OS 9.2 loaded and working fine on it.
>
> However, when I load OS X (Jaguar, Panther, or Tiger), and then try to
> restart in OS X, I get the startup chime, then a grey screen, with an
> apple logo, then I hear a 'click' inside the monitor and the screen
> breaks into a band of light and dark grey and freezes up.
>
> I've got this same exact problem with an old Power Computing Power Tower
> with a G4 upgrade card in it.
>
> I've downloaded the latest firmware for the G4 and it tells me that I've
> already got that.
> It's a Maxtor 10 gig HD, with 2-128 Kingston "valueRAM" chips installed.
> (I am thinking it may be a 3rd party driver problem or crappy ram perhaps?)
>
> A month ago, I purchased a different computer, another 400 mhz AGP off
> ebay. It came loaded with OS X (Jaguar) and it works fine, so I know
> it's possible to get this going.
>
> Any ideas? Please help if you can!
> THANKS a lot!

I had a similar issue once with my old B&W and one of those weird
semi-fixed frequency Sun monitors.

I would try the following:

1) Zap the PRAM about four or five times in a row
2) Perform a safe boot (Hold shift when powering on)
3) If this mode works and you are able to log into the system, check
your display settings
4) Adjust as needed, attempt a normal boot

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