On 29/09/2011, at 12:34 PM, Ken Jackson wrote:

> Hi folks,
> 
> my G4 & G5 are both repeatedly giving me the grey (restart your machine) 
> window!
> I zap the PRAM & it seems ok for a day or so & then reverts.
> Do I need a new PRAM battery? What else would resolve it?
> Running 10.4.11 on both machines.

Hi Ken,

Do you mean you are receiving the grey screen with message  “you need to 
restart your computer”, a Kernel Panic?

Have you checked your  "panic.log" in the folder /Library/Logs/ ?
The panic log contains information about the state of the machine at the time 
of the panic.

Might give us something more to go on.

Cheers,
Ronni

17" MacBook Pro 2.3GHz Quad-Core i7 “Thunderbolt"
2.3GHz / 8GB / 750GB @ 7200rpm HD

OS X 10.6.8 Snow Leopard 
OS X 10.7 Lion
Windows 7 Ultimate (under sufferance)













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