Satellite 2450 turn on automatically after shut down

My laptop is a 2450 Satelite and it has started to turn itself back on when I shut it down.
I believe this to be either a power supply problem or a mtherboard problem.
Has any other users had this problem and what was the remedy?
Thanks,
super1

Do you have a Network cable attached? Maybe Wake-On-LAN is enabled.
Or perhaps the LCD lid switch just needs a clean :p

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Try resetting the system management controller.
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Hi All,
I've owned my notebook (Satellite P300/05X, Processor P8600 (2.4GHz), 17" Display) now for 1 week and I have been very frustrated with this problem I'm about to explain.
After selecting "Shut Down" option (not "sleep", not "hibernate" etc, but definitely "shut down"), the notebook goes through the steps of shutting down, and then all the lights on the touch finger pads turn off, and then the light from the main switch turns off. And then for no apparent reason, the notebook starts up again like as if I've pressed the switch back on! This morning was the worst, I went through the steps of shutting down 3 times! before it actually switched off...very frustrating especially if you're in a hurry.
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Have you connected external devices to the notebook like printer, external HDD and so far?
Disconnect them because this could maybe cause the issue.
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I'm thinking some hardware is causing this, do you have any PCI cards or USB/Firewire devices connected?
How to reset the SMU/PMU on a Power Mac earlier G3, G4, G5 models...
http://support.apple.com/kb/HT1939
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9/8/09 6:19:16 PM Notify[222] * -[NSCFArray objectAtIndex:]: index (0) beyond bounds (0)
9/8/09 6:19:19 PM Notify[222] * -[NSCFArray objectAtIndex:]: index (0) beyond bounds (0)
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Here's what to do to correct :
Erase those 2 files : "com.apple.AutoWake.plist" and "com.apple.PowerManagement.plist" in the Directory:
/Library/Preferences/SystemConfiguration/
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Hi , I have a psu of 350 (Antec) a P4 3400 Prescott with 512DDR2. with vga ATI x300
Overload Protection
Latching Protection
+5V @ +3.3V @ +12V @
cpu temp: 42 case temp: 42
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I tried the bios, management options,....
I would be eternally greatful
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ok, I see, it doesn't matter if it is antec or whatever psu as long as it is +400W with decent V12.
If I knew that before, I would have purchased the sonata with my own chosen psu.
now I will have a good 350W antec psu for nothing.......
I will purchase a new psu, some you guys are mentionning (thanx a lot guys )
I will give my whole computer to the shop, they will remove the mobo , replace it with new one (they just called me) and if the problem persists,...welcome antec full power....
I cannot do another thing than this. I don't want to blow my pc. it is running perfect except of that , except the reboots and won't starts....:D
thanx again. I was thinking if I had a neon light I would be in a discotheque with the reboots....could win some money if I asked for it....spooky:D
Opt.

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You have obviously downloaded and installed Acrobat (30 day trial version) and the trial period has expired.
You need to uninstall Acrobat (using the Control Panel and Add/Remove Programs or Programs and Features [Vista/7])
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Good morning,
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Satellite 2450 turn on automatically after shut down

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