Starts up. Starting sound and apple, then shutdown again

When I turn it on, the starting sound plays, the apple and the "standard" indicator shows, and also another indicator that isn't normal. It loads a couple of seconds and then it shuts down again. What to do?
I've tried starting it in safemode and reseting SMC, but without sucsess.
Worth to mention is that I dropped the mac from a table in to a concret floor, no visual damage and it worked all good for a couple of days, and then it crashed and now it wont start!

If you have an external boot drive you can connect, try that. Otherwise make an appointment at an Apple store genius bar for a free evaluation.
Ciao.

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Help! Why is Macbook not starting, making clicking sounds, and rejecting install disk??

I was working on my Macbook (OS 10.4.11) when the screen froze. I forced a shutdown. When I try to power it up again, I get a blank screen (not sure if gray or blue; looks sort of in between) and hear clicking noises. Eventually, a flashing question mark appears.
I found a post on this problem that said the hard drive was looking for instructions to start up (hence the clicking noises) and an Apple article about possible solutions, <http://support.apple.com/kb/ts1440>, but none of the steps worked.
I then booted up again, inserted Install Disk 1 for Tiger, and forced a shutdown again so that I could boot up with "C" held down see if I could solve the problem from the Uilities menu on the Install Disk. However, when I pressed the power button to start up again, the computer just spit out the Install Disk (even with "C" held down).
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when i try to install the mac os x 10.7.3 i start up the computer and apple logo appears and it stucks why? and what should i do?

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My Mac is 15 months old and all of a sudden it has started resetting the time and date then I get a message saying not all apps will work because of the pre Jan date any help as to why ? Causing problems with wireless router.

My Mac book pro is 15 months old and now suddenly it has started resetting the date and time, causing problems with applications and my wireless access. Any suggestions as to why this is happening and how to fix it?

Seems the time isn't being saved to your computer correctly, it may be a corrupt file that isn't saving the time anymore.
You can move the
com.apple.systempreferences.plist
file out of your Users/Library/Preferences folder to the desktop and reboot.
then go to your System Preferences > Date and Time and set a time server close to your location (or in your time zone)
(trash the file on the desktop if no ill issues occur later on)
or you can follow/bookmark these support docs to reset your PRAM and SMC (and for future reference)
http://support.apple.com/kb/TS2570
http://support.apple.com/kb/TS1440
http://support.apple.com/kb/HT1455
http://support.apple.com/kb/ht3964
http://support.apple.com/kb/HT1379
http://support.apple.com/kb/ht1379
http://support.apple.com/kb/HT1509
I don't remember exactly where OS X is keeping it time settings now, but I think one of those choices should help resolve your issue and won't hurt anything giving them a shot. Perhaps someone else could refresh my memory.

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After a software update (or during an update) my apple ipod touch does not start up any more.
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Sometimes (after a reset) it starts looping apple logo , white screen, apple logo and so on.
Is not recognized in itunes.

Try:
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- If not successful and you can't fully turn the iPod fully off, let the battery fully drain. After charging for an least an hour try the above again.
- If still not successful that indicates a hardware problem and an appointment at the Genius Bar of an Apple store is in order.

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Yes the icon is normal if you haven't turned on your iPod for a while. It goes into a sort of hiberation after a period of time (12 or 14 hours I think) and takes slightly longer to start up. As to the crackling, have you tried different earphones in case they are causing it?

My g4 running tiger won't startup, got the sound and apple on screen but after that the screen is just blank but not black!

was working fine, today I startup and all seems normal but after the apple logo it just won't start, the screen is just blank.

Hi there,
Does it boot with the Option/alt key held down & show boot choices?
Could be many things, we should start with this...
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2. When your computer finishes starting up from the disc, choose Disk Utility from the Installer menu. (In Mac OS X 10.4 or later, you must select your language first.)
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http://docs.info.apple.com/article.html?artnum=106214
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OK - I managed to fix this. Will document for others.
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Found out that the entry in my Windows 7 firewall said I-Tunes - but when you looked at the details button it wasnt pointing to a program - it was just blank.
So added a new entry and pointed that at the I-Tunes exe file.
Now all working...

My iMac turns on the start up chime sounds, you see the apple icon on the screen and then it just shuts off. Any ideas?

My iMac turns on the start up chime sounds, you see the apple icon on the screen and then it just shuts off. Any ideas?

Do these two resets:
SMC RESET
http://support.apple.com/kb/HT3964
Shut down the computer.
Unplug the computer's power cord and ALL peripherals.
Wait 15 seconds.
Attach the computers power cable.
Wait another 5 seconds and press the power button to turn on the computer.
The 5 second timing is important to a successful reset.
PRAM RESET
Zap the PRAM
Shut down the computer.
Locate the following keys on the keyboard: Command, Option, P, and R. You will need to hold these keys down simultaneously in step 4.
Turn on the computer.
Press and hold the Command-Option-P-R keys. You must press this key combination before the gray screen appears.
Hold the keys down until the computer restarts and you hear the startup sound for the second time.
Release the keys.

Starts up. Starting sound and apple, then shutdown again

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