Martin,

Try resetting the PMU (Power Management Unit) - full instructions here: 
http://support.apple.com/kb/ht1431

Chris Webb . Partner
MacService 
Woodside, Brightling Road
Robertsbridge, East Sussex, TN32 5EL 
t: 01580 881212
f: 01580 881313
m: 07770 960632
e: [email protected]
w: www.macservice.co.uk



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On 27 Aug 2011, at 12:33, Martin Douglas wrote:

> Went to switch on my trusty PowerBook G4 and it is dead in the water. The 
> battery is fully charged and it is also plugged in to the mains. My wife was 
> using it last night and all was fine. 
> 
> But today nothing. On pressing the power button, there is a sound from the 
> hard drive as if it is coming to life and then nothing. Not a sound or sign 
> of life.
> 
> I know it's nine years old and has been in use for just about every day in 
> those nine years. Can anyone suggest a way of bringing it back to life?
> 
> It cannot be worth a lot but it means a lot to me and I don't really want to 
> shell out for a new lap top in those tough times.
> 
> Martin
> 
> Sent from my iPad
> 
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