After installing latest update Macbook won't start up.

After installing the latest update my macbook won't start up. Instead of the login screen I get a flashing map icon with a question mark. My uncle says that means it can't find the startup disk and I had to startup from the install disk holding C but it didn't work. I'm quite desperate because I need my macbook for school (writing & producing music). I type this on a friend's computer... How can I fix this? Or do I really have to go to a mac store and part from my macbook for an unknown time...? :'(
I don't exactly know what version I have (can't check it now either) but it's at least 10.6.something and I always install the updates...

Hi
Anything unusual happen during the 10.5.3 update installation phase?
What type of iMac are you using? Your tag says G5 but also Intel core processors - it can't be both.
Try this:
-First unplug your computer and wait 10 minutes
-Next, simultaneously reinsert the power cord while pressing the power button for 5 seconds then release
-Press the power button again to start the computer - this resets the computer's system management unit (SMU) which controls your machines power functions.
-Next, press/hold down the P/R/option/command keys for 3 Apple chimes. This clears the machine's PRAM. After the 3rd chime release those keys and immediately hold down the Shift key to put the machine into Safe User Mode
-If you get to a log-in screen (may take several minutes as repair functions are occurring on the boot), log-in. When the login is complete, restart the computer as usual.
If no go, I suggest taking the machine to a certified Apple tech, or if you live near an Apple store to the Genius Bar.
Post back
Message was edited by: Hawaiian_Starman

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After installing latest update, iMac won't complete startup

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Hi
Anything unusual happen during the 10.5.3 update installation phase?
What type of iMac are you using? Your tag says G5 but also Intel core processors - it can't be both.
Try this:
-First unplug your computer and wait 10 minutes
-Next, simultaneously reinsert the power cord while pressing the power button for 5 seconds then release
-Press the power button again to start the computer - this resets the computer's system management unit (SMU) which controls your machines power functions.
-Next, press/hold down the P/R/option/command keys for 3 Apple chimes. This clears the machine's PRAM. After the 3rd chime release those keys and immediately hold down the Shift key to put the machine into Safe User Mode
-If you get to a log-in screen (may take several minutes as repair functions are occurring on the boot), log-in. When the login is complete, restart the computer as usual.
If no go, I suggest taking the machine to a certified Apple tech, or if you live near an Apple store to the Genius Bar.
Post back
Message was edited by: Hawaiian_Starman

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Welcome to Discussions!
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really would apreciate to help whomever to find out what the hell is responsible 4 this !!!
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gal9000, welcome to the forum,
have you tried running windows system restore from safe mode? It usually works then because some anti-virus softwares will prevent it from running successfully from "normal" windows.
Hope this helps.
Andy ______________________________________
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I was giong to say, "Help me, Adobe Joe Kenobi", but it looks like you're growing a beard waiting for an answer, too.
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After installing software updates, PB won't boot up completlely HELP!

I posted earlier about my problem but on the wrong forum. I'm new to this forum and I'm a new mac owner in desperate need of your help!!
Yesterday a few software updates needed to be installed so I did, they were minor- iTunes, iTunes Phone Driver, Microsoft Office, and a security update. I installed all the software with no problems until it wanted to restart. I let it do its thing, but after 10 or 15 minutes it would not boot up so I held down the power button and shut it off. It wasn't making any peculiar sounds except that after 10 minutes the crunching noise that the hard drive makes became sort of sporadic and lost consistency.
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Whoever reads this will cringe when I say I haven't backed anything up... I'm not worried about losing music or pictures or other documents but I am concerned about losing my apps- I'm an art major and I really need all my photoshop, illustrator, flash, etc... I don't have the original disks for those programs since the computer belonged to my mom who is a graphic designer and got those programs through her work.
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Hi s,
Was the PB working without any issues before this?
Exactly what happens when you try to boot normally?
I'm wondering if you did a hard shutdown (last resort) in the middle of your PB installing/arranging tens of thousands of files, so now there is software and potentially firmware corruption (something like a brain surgeon sewing your head up only halfway through the operation).
Have you tried booting into Safe Mode?
If you get the PB booted again, repair permissions (not from the install disc).
Run Software Update, but never let it install more than one update at a time, and repair permissions before and after each update. If you want to be safer yet, go to Apple Downloads and download the update from there, then install it. Enough people have reported issues using SU that I never install from there. Also, if you're really running 10.4.1, that should be your first order of business; you should update to 10.4.11.
If you have another Mac available to you, see if yours will boot into FireWire Target Disk Mode.
Now that you've learned about backing up, I'm sure you'll go out and buy a FireWire external HD, and if you get the PB working properly again, clone the PB's internal HD to the external. If you ever have software issues again, you can simply clone the latest backup back onto the PB's HD and be ready to go from that point.

After installing latest update Macbook won't start up.

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