Mac won't start with ethernet plugged in

My Mac won't fully start when ethernet is in computer. Do I not have the Ethernet fully installed or something?

It's far more likely that you have a faulty Ethernet cable; the connectors may be frayed or the cable kinked. A lesser possibility is that the router or modem on the other end of the cable has a shorted Ethernet port. That' also possible on the other end with your computer, but if it otherwise works OK, suspect the cable first. Try substituting a known-good Ethernet cable and if that's not available, try a new cable.

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Mac won't start with mavericks

Just tried to mbp and it won't start up

The boot drive is failing, or there is some other hardware fault.
Make a "Genius" appointment at an Apple Store, or go to another authorized service provider.
Back up all data on the internal drive(s) before you hand over your computer to anyone. There are ways to back up a computer that isn't fully functional — ask if you need guidance.
If privacy is a concern, erase the data partition(s) with the option to write zeros* (do this only if you have at least two complete, independent backups, and you know how to restore to an empty drive from any of them.) Don’t erase the recovery partition, if present.
Keeping your confidential data secure during hardware repair
*An SSD doesn't need to be zeroed.

Imac G5 won't start with Isight plugged into the firewire port.

I went to turn on my Imac today and it wouldn't start. After checking all the usual culprits (power strip, outlet and power chord) which were not the problem, I proceeded by unplugging all the external devices from the back ports. After unplugging the computer for a few seconds and plugging it back in (which I read resets any power issues), it turned back on. I plugged my Isight camera back in and turned it on and the computer suddenly shut off. I reproduced this quite a few times and it did the same thing. It won't even turn on if any device is plugged into the firewire port. Does anyone have a clue of what this conflict could be or experienced anything similar.
I would greatly appreciate any input.
Thanks in advance,
Daniel

Welcome to Discussions - try resetting your PRAM, if that doesn't work, I'm afraid there is something wrong with your logic board, where the firewire bus is located. The best thing to do would be to take it in for servicing.

Computer won't start with iPod plugged in

Hey all,
Just got a brand new MacBook Pro and a 30 gig iPod. When I restart with the iPod plugged into the USB port, the computer sits at the white screen forever and doesn't boot into OS X until it is disconnected. How do I fix this? Thanks!

I don't know if this will fix the problem, but here it is:
1. start the macbook up normally w/o the iPod plugged in.
2. right after u hit the power button hold down the button combination "s" and "command"
3. do not let go until the screen goes black and white text is on it. when the text stops moving there will be a prompt.
4. type the following text WITHOUT QUOTES "fsck -f"
5. then when it is done do that same thing again.
6. then try to exit type the following text WITHOUT QUOTES "reboot"
7. then try to reboot with the iPod connected
if that does not work take it into a apple store.

Mac won't start with install disc 1-after kernal panic

so i thought i'd try to burn a dying Lacie disc to retrieve some files and when I did the kernel panic popped up. Now, I've had KPs before and usually resolved them with the two reinstal options using my original system discs. this time however when i manually put in the disc and held the c key down, the kp message came up and after a minute or two, the screen went to blue screen. Help! I've got to get this old machine up and going! now typing on a friends pc laptop.

Will it boot in Safe Mode? See
What is Safe Boot, Safe Mode? (Mac OS X)
http://docs.info.apple.com/article.html?artnum=107392
Takes a while to run, but it usually "fixes" problems.
 Cheers, Tom

My Mac won't start up and Im using DiscWarrior. When I restart the computer with "c" down, the screen goes black. Is this ok? Do I just wait it out?

my Mac won't start up and Im using DiscWarrior. When I restart the computer with "c" down, the screen goes black. Is this ok? Do I just wait it out?

Have you just tried repairing with Disk Utility?
Repair the Hard Drive and Permissions - Lion/Mountain Lion
Boot to the Recovery HD:
Restart the computer and after the chime press and hold down the COMMAND and R keys until the menu screen appears. Alternatively, restart the computer and after the chime press and hold down the OPTION key until the boot manager screen appears. Select the Recovery HD and click on the downward pointing arrow button.
Repair
When the recovery menu appears select Disk Utility. After DU loads select your hard drive entry (mfgr.'s ID and drive size) from the the left side list. In the DU status area you will see an entry for the S.M.A.R.T. status of the hard drive. If it does not say "Verified" then the hard drive is failing or failed. (SMART status is not reported on external Firewire or USB drives.) If the drive is "Verified" then select your OS X volume from the list on the left (sub-entry below the drive entry,) click on the First Aid tab, then click on the Repair Disk button. If DU reports any errors that have been fixed, then re-run Repair Disk until no errors are reported. If no errors are reported then click on the Repair Permissions button. When the process is completed, then quit DU and return to the main menu. Select Restart from the Apple menu.

I Mac won't start -- we get apple logo with spinning wheel, question mark that disappears and then a blank blue screen

My daughter's old I Mac won't start. It is not backed up. We want to get some things off of it if we can.
When we turn it on, we get the Apple logo with spinning wheel for awhile, then a question mark briefly and then a sky blue blank screen. Is there any hope of getting this to work? This computer is out of warranty. Does it seem that if we reinstall the Operating System we might find old data?

First try restarting with the original install disc an run Disk Utility to repair the drive. If you have to re install the OS make sure you select archive and install or else everything will be lost.

Mac won't start blinking folder with ?

Hello have a question, my mac won t start, it appears a folder with a ? Inside....can anybody help me.....

That folder with the question mark icon means that the MacBook can't find the boot directory. That can either mean it can't find the hard drive or the Operating System data on the hard drive is somehow corrupted.
Put your install DVD into the optical drive (CD/DVD drive) and reboot. As soon as you hear the boot chime, hold down the "c" key on your keyboard (or the Option key until the Install Disk shows up). That will force your MacBook to boot from the install DVD in the optical drive.
When it does start up, you'll see a panel asking you to choose your language. Choose your language and press the Return key on your keyboard once. It will then present you with an Installation window. Completely ignore this window and click on Utilities in the top menu and scroll down to Disk Utility and click it. When it comes up is your Hard Drive in the list on the left?
If it is then click on the Mac OS partition of your hard drive in the left hand list. Then select the First Aid Tab and run Repair Disk. The Repair Disk button won't be available until you've clicked on the Mac OS partition on your hard drive. If that repairs any problems run it again until the green OK appears and then run Repair Permissions.
If your hard drive isn’t recognized in Disk Utility then your hard drive is probably dead.

Mac won't start up and shows grey screen

My mac won't start up this morning ? It has a full charge of battery and even plugged in it just shows the grey screen. Any help.

Please restart your Mac and hold the 'Option'-key to see your start-up discs. If you do not see any start-up discs it could be your hard disk cable that is faulty. This is a common problem with Macbooks, but I am not sure this issue has been fixed with the Retina models. I've had this problem with my 2012 Pro, and a new cable did the job. Very easy to do yourself!
You can also start Internet Recovery (need wifi or cable) and start up Disk Utilities to see if your hard disk shows up there.
Please let me know.

Mac won't start (Kernel Panics)

Hello,
My mac won't start up. It turns on, gets as far as the spinning circle and apple logo then a dark screen comes down with a Kernel Panic message. This occurred roughly three months ago and I ended up taking the mac into the regent street store where it was fixed under apple care warranty. My care has now run out, and the 90 day repair warranty has expired but the problem is back so obviously hasn't been fixed properly. Is there anything that can be done about this?
Every time I boot up the computer the message appears, I have tried rebooting with the safe option as well as re installing OSX from the original disks. The install completes successfully but upon restart it pops up with the original kernel panic message.
Luckily I have everything backed up so am prepared to try anything to get it running.
Thanks.

Let us know, but since you obviously have another machine, have you tried Target Disk Mode and then Disk Utility?
use TDM to access Disk Utility.
1. Click the First Aid tab.
2. Click the disclosure triangle to the left of the hard drive icon to display the names of your hard disk volumes and partitions.
3. Select your Mac OS X volume.
4. Click Repair. Disk Utility checks and repairs the disk.
Please post back,

Every other day, my mac won't start up

every other day, my mac won't start up. my keyboard would light up and i hear the system start but nothing is appearing in the screen. i would have to press the start button until the screen actually shows up.. why does it do that?

Have you just tried repairing with Disk Utility?
Repair the Hard Drive and Permissions - Lion/Mountain Lion
Boot to the Recovery HD:
Restart the computer and after the chime press and hold down the COMMAND and R keys until the menu screen appears. Alternatively, restart the computer and after the chime press and hold down the OPTION key until the boot manager screen appears. Select the Recovery HD and click on the downward pointing arrow button.
Repair
When the recovery menu appears select Disk Utility. After DU loads select your hard drive entry (mfgr.'s ID and drive size) from the the left side list. In the DU status area you will see an entry for the S.M.A.R.T. status of the hard drive. If it does not say "Verified" then the hard drive is failing or failed. (SMART status is not reported on external Firewire or USB drives.) If the drive is "Verified" then select your OS X volume from the list on the left (sub-entry below the drive entry,) click on the First Aid tab, then click on the Repair Disk button. If DU reports any errors that have been fixed, then re-run Repair Disk until no errors are reported. If no errors are reported then click on the Repair Permissions button. When the process is completed, then quit DU and return to the main menu. Select Restart from the Apple menu.

Your Mac won't start up in Mac OS X (Mac OS X 10.3.9 or earlier)

I just got off the phone with an AppleCare agent. My iBook OS 10.4 wouldn't start - it just went to a blue screen. I'm happy to say that the agent got everthing working again and said that she would email me an article that would help if it ever happens again. She emailed me "Your Mac won't start up in Mac OS X (Mac OS X 10.3.9 or earlier)" I have 10.4, is this article any use for me or was I emailed the wrong articel. Is there an article "Your Mac won't start up in Mac OS X (Mac OS X 10.4 or later)"????

Thank you for yoiur response. I'll click on that link and add my input..
Don't be put off by the title. The document's just as
valid for Tiger, especially if those are the same
steps that fixed your problem. The article was
revised Feb 2006 and someone forgot to update it to
mention Tiger. Go to
<http://docs.info.apple.com/article.html?artnum=106464
, click on the It's good, but... link and
tell them it should be updated to include a reference
to Tiger.

TS1411 My Mac won't start

My Mac won't start. I have tried all trouble shooting things like unplug and plug into a different power point. If I leave finger on start button, can sometimes get internal fan to attempt to start then stops. Please help. My computer is less than two years old.

Then, it's time for a trip to an Apple repair station.

Sawtooth won't boot with anything plugged into it.

My G4 450 won't boot with anything plugged into it at all. The power will go on but no boot. If I unplug everything (except the power cord) it will boot with a chime. Anyone know what the problem could be?

rs6er:
Well, it's likely to be a problem with the video card, the monitor, or the monitor cable. (I assume that this is your normal monitor which was just recently working on your Mac.)
Some thoughts... Have you tried reseating the video card? Does the monitor power on? Do you have another monitor and cable you can swap and try? Will it boot to Safe Mode ("s" key depressed at startup) with the monitor attached?
Gary
Message was edited by: Majordadusma

Macbook Pro about 2012 won't start with out power lead in and runs very very slow Maverick OS

Macbook Pro about 2012 won't start with out power lead in and runs very very slow Maverick OS?

Take each of these steps as needed, and check to make sure it hasn't been fixed with a reboot afterwards before trying the next step.
Backup your data if you haven't already:
https://discussions.apple.com/docs/DOC-1992
If you use Airplay, see https://discussions.apple.com/docs/DOC-6831
If you don't use Airplay, be sure to upgrade to 10.9.2, using this update:
http://support.apple.com/kb/DL1726
Make sure your hard drive is not over 85% full.
Make sure Spotlight is not indexing.
Make sure Time Machine is not running when you do other tasks.
Check to make sure you have not accidently/purposefully installed MacKeeper, as it will slow down your Mac:
https://discussions.apple.com/docs/DOC-3036
Remove any other system cache cleaning applications.
Reset the SMC:
http://support.apple.com/kb/ht3964
Reset the PRAM:
http://support.apple.com/kb/ht1379
Check to make sure there aren't any signs the power adapter might be damaged, or the wrong one*:
http://www.macmaps.com/frayguide.html
If there are still issues, you may need to replace the battery:
https://www.apple.com/batteries/replacements.html

Mac won't start with ethernet plugged in

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