Re: cannot restart after a download failed to download...
Reset the PRAM if you haven't. Hold down Opt, Command, R, P the second you turn the computer on, and hold them down until you hear the startup tone once, and then once more. Let go, and see if it boots. If not, turn on, and hold down S (command -S in older systems) type in the first option and let the computer do a self check. if it says it repaired something, repeat until it says the system is ok. Then reboot.
If you can't even turn the computer on, well, that's an AppleCare or SOL situation.
- If you need clarification, ask it in the comment box above.
- Better answers use proper spelling and grammar.
- Provide details, support with references or personal experience.
Tell us some more! Your answer needs to include more details to help people.You can't post answers that contain an email address.Please enter a valid email address.The email address entered is already associated to an account.Login to postPlease use English characters only.
Tip: The max point reward for answering a question is 15.
Close the Kindle app and restart it. If that does not help, try restarting your MacBook.
If that does not work, try deleting the Kindle and reloading it on your system.
Everything you got from Amazon will still be in your Amazon account.
Should work great. Just make sure that all your current software updates are done first.
Load the disc and hold down C on restart or load disk and hit the restart button in the pop up window from the disk. THen follow prompts. It will allow you to save whatever you want from previous installs. then go through the software updates again after it is done.
probably the operating system is corrupted . Try to boot with installation media and repair the disk permission and restart the computer.If it boot after file permission repair then its fine or else you have to format it.
Try this. Make sure your boot CD/DVD is in the drive and switch off the computer - hold down the power button until it goes off completely - it takes 7 to 10 seconds.
Then restart the mac but immediately press and hold the alt key (or option key - the one next to the key with the pretzel on it)
After a moment or two you should get a blue screen with the spinning pizza. After about another 10 seconds or so you should get an icon of your HD and an icon for the CD/DVD
If you only get the CD/DVD then your HD has a problem. If your get neither then you had best take it to a service centre as there is something more seriously wrong.
Assuming you get the CD/DVD icon click on it then press the big arrow that should also be there (NOT the bendy arrow - that means Go back)
The computer should then start up from the CD/DVD. Once you get the Install screen come up, go to the menu bar and find 'Disk Utility'.
This will take over and you can run the first aid routine IF the utility can actually see your HD. With luck it will and will sort it out. then quit the utility and restart the computer and see what happens.
If on the other hand you didn't get anywhere, or disk utility gave you a failure message, then you need some more aggressive software like DiskWarrior or Drive Genius. They are both very good at restoring misbehaving or non-mounting HDs.
On the more black side, Apple unfortunately managed to fit a batch of bad HDs to some macbooks. These were made by Seagate. They ran beautifully for about a year and then failed catastrophically. Apple replaced these drive without question but unfortunately the data on them was completely lost. One of my clients send their drive to Ontrack who returned it saying that no recovery was possible.
So be prepard for the worst.
The 10.5.7 update sometimes does several automatic restarts - depending on the mac and the previously installed OS version.
In my opinion the 10.5.7 update has been the strangest I have done.
Hold down the power button for about 10 seconds. The MacBook should now be off - but it may restart automatically while flashing the sleep light at you - and make a long beep noise. Don't worry if that happens just let it do whatever it does. Watch the screen and follow any prompts that come up.
If the MacBook did not turn itself back on, hold the power button down again for about 10 seconds. What happens now?
Don't press any other buttons unless the computer tells you to.
If however, you end up with another 3 hour wait then something is definitely wrong and you need to take it in to a specialist.
Restart your mac: Safe Boot: Hold down the shift key after the chime until the Apple logo appears and the gear is moving. It will take awhile but you will be asked to login. Go to your Applications folder> Utilities and launch Disk Utility. In the left side column, highlight your drive and repair permissions.( button down below) Empty the trash. Restart your mac
http://www.ifixit.com/Guide try this location for a guide
re-set your pmu 1. disconnect battery and power supply
2. hold down start button for 5-6 seconds
3. re-connect battery and power supply
try to start
if nothing might be your dc-in board/ has failed