Powermac G4 1,5ghz will not boot after OS update or software install

I have a very strange problem. A book is fallen on Powermac G4 12" 1,5 ghz from the bookshell when the laptop was open. It landed neer the space bar.
Since then, my powerbook works most of the time if I clean install the OS (tried with 10.3, 10.4 and 10.5 cd's), works most of the time, sometimes the problem stays. If i update the OS or install for example Ms office the problem will show up agian.
The problem is the powerbook will not start up anymore. The powerup screen shows with the apple logo and after a minute he reboots again. The powerbook does not start up anymore. the problem is solved when I reinstall an OS. But when i update of install software it's there again.
Strange?????

Have you run the Apple Hardware Test that is on one of the discs that were originally shipped with the computer?

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Mac Mini will not boot after Security Update 2008-007

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A G4 Mac Mini machine I was asked to take a look at will not boot after the owner (succesfully) installed Security Update 2008-007 from Software Update. Booting always hangs at the blue screen after the Apple logo, and booting in verbose mode reveals that WindowServer is crashing repeatedly. Permissions and filesystems have been repaired, PRAM reset, etc. Safe boot also exhibits the same problem, but it is possible to boot to single user mode. Hardware checks out fine with diagnostic utilities.
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Hi Arkku , and a warm welcome to the forums!
I'd certainly give Sig's advice a try first.
If that should fail...
applesetupdone...
This was Posted by: JoseAranda at September 9, 2006 3:48 AM
"OK, restart your computer, hold down Command-s and type in the following:
/sbin/fsck -fy Enter
/sbin/mount -uaw Enter
rm /var/db/.applesetupdone Enter
# The rm command is the remove command which deletes the file.
# Robert: I'd rename the file via: mv /var/db/.applesetupdone /var/db/.applesetupdone.old
reboot Enter
Once you've done that the computer reboots and it's like the first time you used the machine. Your old accounts are all safe. From there you just change all other account passwords in the account preferences!!
end of posted by: JoseAranda"
Reset OS X Password Without an OS X CD...
http://theappleblog.com/2008/06/22/reset-os-x-password-without-an-os-x-cd/

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After a series of windows update (windows 8.1) my HP Pavilion 15-n268sa will not boot up, no fan noises, no lights no nothing.
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Hello Cuffy,
Welcome to the HP Forums!
I understand you notebook will not boot after a series of Windows updates.
Can you tell me if you are able to access the HP Recovery Manager by repeatedly tapping the F11 key while the notebook turns on? If you can access this, try doing a system restore to before you installed the updates. If not I would suggest you go through this document: Computer Does Not Start and the LEDs Blink or the Computer Beeps.
If it's the Caps Lock light that is blinking this document will tell you exactly what the error is (spoiler: 3 beeps is a memory failure). This could also explain the failed updates. The updates are stored in the RAM before being applied to the operating system.
You can try reseating the RAM, or using only 1 of the RAM cards, as you have 2x4GB cards. If it still doesn't work with 1 card, try the other card to confirm it has failed.
You can replace defective cards via HP Phone Support if covered under warranty or at the HP Part Store if not covered. You can contact HP Technical Support at 1-800-474-6836 in North America. For all other regions click here.
Hopefully this information helps!
Please click the "Kudos, Thumbs Up" at the bottom of this post if you want to say "Thanks" for helping!
Please click "Accept as Solution" if you feel my post solved your issue, it will help others find the solution.
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Hi
I used the Microsoft installation disk but just keep getting to the same stage until the blue screen appears. I have tried different installation disks and also changed the hard drives as well. I can do everything in bios, change boot device enable or disable devices but that is it. I have tried a few times to instal windows but it just stops at the same point saying windows is stopping instal to protect the system. I fear the bios update has done some permanent damage as I cant get past the dreaded blue screen.Thanks anyway

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This morning I used the windows bios update utility to update my Lenovo w510 type 4318. Everything appeared to have been successful until the machine rebooted. It froze on the lenovo splash screen with text saying to press the blue think vantage button for more options.
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Case #9026SN6
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lead_org wrote:
sometimes it is safer to do the bios update outside of windows environment.
NEVER use the .EXE method for a BIOS update. Always use the .ISO and the CD/DVD boot method. Never update after the warranty expires.

Computer will not boot after bios update

This afternoon I recieved an urgent BIOS update in much the same format as I have received updates from HP for years. It was accompanied with some other non urgent update.
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HP.......................................HP MINI PC 210-4125
model ................................210-4125
Bios ...................................F08
ser no................................ [edited Serial Number by Moderator]
product no.........................A8V56EA#ABU
Ram ..................................4.0 GB
system board ID............... 338d
processor .........................Atom(TM) CPU N2800 1.86GHz
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thank you George
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Microsoft Certified Professional
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Disclaimer: This posting is provided "AS IS" with no warranties or guarantees , and confers no rights.

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Powermac G4 1,5ghz will not boot after OS update or software install

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