Why won't my computer start up fully

It acts like it wants to turn on and them like 15% in it turns right back off and it is fully charged

If you have a backup, try reinstalling OS X.
Reinstall Mavericks
http://support.apple.com/kb/PH13871

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Why won't my computer start up? Whats this mean?

I have a power mac G5 (Power PC) I havent used the computer in years and I started it up one day and no problems.
A few days after running the computer it wouldnt boot up its OS. Below is a link of the grey screen. After the wheel spins for about 45 seconds and then the wheel turns to a low resolution pink box. After this spins for a few seconds the computer stays on and the display turns black.
Im able to boot up in safe mode.
Image 1 - Close Up of Image 1
Any help would be appreciated.
Tom

Hi, your links give this...
Error (403)
It seems you don't belong here! You should probably sign in. Check out our Help Center and forums for help, or head back to home.
Lkely a Graphic card problem, have you blown the dust ouy lately?
More info on that...
One way to test is to Safe Boot from the HD, (holding Shift key down at bootup), run Disk Utility in Applications>Utilities, then highlight your drive, click on Repair Permissions, Test for problem in Safe Mode...
PS. Safe boot may stay on the gray radian for a long time, let it go, it's trying to repair the Hard Drive
Reboot, test again.
If it only does it in Regular Boot, then it could be some hardware problem like Video card, (Quartz is turned off in Safe Mode), or Airport, or some USB or Firewire device, or 3rd party add-on, Check System Preferences>Accounts (Users & Groups in later OSX versions)>Login Items window to see if it or something relevant is listed.
Check the System Preferences>Other Row, for 3rd party Pref Panes.
Also look in these if they exist, some are invisible...
/private/var/run/StartupItems
/Library/StartupItems
/System/Library/StartupItems
/System/Library/LaunchDaemons
/Library/LaunchDaemons

Why won't my computer start?

I press the power button, and no response. Computer was last used on Friday, two days later it's unresponsive...

Have a look at > Troubleshooting: My computer won't turn on

Why won't my computer let me make changes to documents??

Why won't my computer let me make changes to documents saved in pages and save them again? It keeps saying access denied when its my computer and I have Lion OS X

Right click the document and select 'get info'. Check the permissions for the file. If several of these files have the wrong permissions then you may need to repair user permissions. See this for instructions:
http://osxdaily.com/2011/11/15/repair-user-permissions-in-mac-os-x-lion/

Why won't my computer update?

Why won't my computer update? I keep trying and nothing happens. I follow the prompts and restart, but still no update.

Which updates are you trying to install?
How large is you HD and how much space do you have left?

HT1338 Why won't my computer pick up the wireless in my home? All other computers in my home can get internet

Why won't my computer pick up the wireless in my home? All other computers in my home can get the internet.

Turn Off your computer. Then turn Off (disconnect power cord for 30 seconds or longer) the wireless router & then back On. Now boot your computer. Hopefully it will see the WiFi.
 Cheers, Tom

I was writing to -R dvds fine from blank dvds purchased last year. Inserted newer purchase -R dvds and MacPro spits out dvd. Why won't my computer now accept -R blank dvds?

I was writing to -R dvds fine from blank dvds purchased last year. Inserted newer purchase -R dvds and MacPro spits blank dvd back out. Why won't my computer now accept -R blank dvds?

Likely either the batch of media is defective, or the drive itself is not working.
Swap for different media; for a different batch from a different vendor, and also try +R media.
The slot-loading drives on various Mac systems can and variously do fail. If different media doesn't work, then you probably have a failed drive.
If your Mac is of same the vintage as OS X v10.4 that's listed in your footer and you're not in a position to replace or repair the optical drive in your Mac, then you might consider using an external USB CD/DVD device. If you don't have another Mac around to perform the recording on, that is.

Where is the stand alone installer ,why won't my computer upset from10.9.1 to 10.9.2

where is the stand alone installer ,why won't my computer upset from10.9.1 to 10.9.2

Go to About This Mac in the Apple menu.
Click on the Version number in the window that opens. It will change to Build number. What's the build number?
Also, what error message do you see, or any other helping description of what happens when you try to update.

HT1926 Why won't i tunes start in Windows 7 64 bit?

Why won't i tunes start in Windows 7 64 bit?

Got it working, had to go to the start menu and do a search for "Apple Software Update" and update Quicktime - had an old version that wasn't getting updated. Itunes works without problem now.

Why won't my computer's address book sync ALL of my contacts with my iPhone? no MobileMe, no iCloud, just straight from computer to phone.

Why won't my computer's address book sync ALL of my contacts with my iPhone? No MobileMe, no iCloud, just straight from computer to phone. I have checked all the settings and all seems correct. It simply won't pull in all of the contacts. Last time, it added some new ones, but deleted others.

I found the route of the problem! All the songs under 'On This Phone' are completely grayed out! The only question is now how do I ungray them???

Why won't my computer let Itunes download the update

Why won't my computer upgrade from 10.7.0.21 to 11.0.1 on windows XP?

Using the software update function, upgrade your Operating System to 10.6.8, and download the appropriate version of iTunes.

HT3371 When I plug in the computer to charge, the light is green for a minute and then turns red and the plug gets very hot. It's not the plug as it works on other computer. Why won't my computer charge?

When I plug in my MacBook Pro to charge, the light is green for a minute and then it turns red and the plug gets very hot. The plug works fine on another computer and charges it. Why won't my MacBook Pro charge?

You performed all of the steps outlined in this link?
http://support.apple.com/kb/TS1567
You uninstalled and reinstalled iTunes?
GB

WHY WON'T MY COMPUTER ACCEPT LATEST UPDATE

FIREFOX COMES ON MY SCREEN WITH A NEW UPDATE AND IT HIGHLY RECCOMENDS I DO SO . I AGREE BUT IT REFUSES TO ACCEPT MY UPDATE. WHY WON'T IT ACCEPT THE NEW UPDATE??

I tried creating the new user account but that didn't change anything. Neither did updating to OS X 10.4.3. It just doesn't make sense because I've had the same thing happen with tv dvd players not being able to play stuff but all the computers can and stuff like that, but my dad's computer, which is the same model as mine, can play it and mine can't. It just keeps spitting it right back out. :\ Any more suggestions? I bought the extended warranty, I might try giving Apple a call.

Why won't my computer wake up?

About 4 days ago my computer started to fall asleep (as usual) but when I tried to wake it up, It wouldn't.
So I tried to Restart my Mac and I immediately held down the Command-Option-O-F key combo until I saw a somewhat intimidating command-line display that ends with the Open Fimware prompt. I typed the following lines:
reset-nvram
pressed Return on keyboard
set-defaults
pressed Return
reset-all
pressed Return
It didn't work, so I deleted the com.apple.PowerManagement.plist file in the Finder/Hard drive/Library/Preferences/SystemConfiguration
It didn't work, I erased my hard-drive and reinstalled Mac OS X
It didn't work, I did a Hardware Test and my computer say everything passed.
NOW WHAT, IDEAS PLEASE.

Did you try resetting the SMU (whatever that stands for... I forget.)? I've got sleep issues with mine which seem to be solved by this.
Here's my scenario:
Computer goes to sleep via the apple menu. When I go to wake it up, the cooling fan spins up to maximum, but that's as far as it goes. Force-shut-down and restart, and it does the same thing. Reset the SMU, it spins back up normally. My solution thusfar has been to not put the thing to sleep.
Resetting the SMU proceedure:
1) turn off the computer.
2) unplug everything from the back, including the power cord.
3) wait 10 - 15 seconds
4) hold down the power button and plug the power cord back in.
5) release the power button.
6) press the power button to start the computer.
Don't know if this will help your issues or not, but it's worth a try. One thing I've discovered by reading the myriad solutions offered in these forums--they work on some machines, and not on others, with no rhyme or reason as to why. Yes, I'm glad I got the extended AppleCare warranty.
Later,
K

Why won't my computer load my homepage on start-up, which is the sign-on page for "gmail", after up-grading to Firefox-6?

Upgraded to Firefox6 a week ago when "suggested" by pop-up screen. Since then, computer will not open gmail using Mozilla but will access it through IE. I get the following message:-
* The connection has timed out
* The server at www.google.com is taking too long to respond.
* The site could be temporarily unavailable or too busy. Try again in a few moments.
* If you are unable to load any pages, check your computer's network connection.
* If your computer or network is protected by a firewall or proxy, make sure that Firefox is permitted to access the Web
What is the problem? Anything to do with "incompatibility with Microsoft and/or Google" - again?
I can access all my other regular sites through Mozilla.

Apple's Wireless Diagnostics may supply some additional helpful information.
To use it, hold an option key while you click your Mac's Wi-Fi icon, and choose Open Wireless Diagnostics...
The following authentication dialog will appear:
Authenticate with your Admin password, then click the Continue button in the following:
The network analysis and diagnostic tests will take several minutes to complete:
When it completes, if your wireless network is functioning properly the following will result:
If something is amiss, supposedly the results will be different and you will be presented with helpful information.
Assuming your connection is "working as expected" select Continue to summary and click Continue:
Ignore the pre-populated text field, which is provided as a place for you to type in additional information should Apple ask for it in the course of obtaining technical assistance from them. Apple has no way of knowing where your router is located in your home, and certainly doesn't know if you even have an upstairs bedroom closet.
Click Continue.
The next step will also take a few minutes:
When it finishes, you will be presented with a summary that may or may not be useful to you. Let me know if it is.
The WirelessDiagnostics-xxx.tar.gz file deposited on your Desktop can be dragged to the Trash, or you may wish to expand it and examine its contents. It's up to you.

Why won't my computer start up fully

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