G4 won't start at all - what do symptoms suggest please?

I have a G4 which suddenly stopped working. When the front panel button is pressed it will glow blue (for as long as it is held in) but nothing else happens - no fan, no LEDs etc. Does this suggest a failure in one of the power supply unit tappings? Are there any fuses in the power supply module to check? Is there anywhere to download circuit diagrams of G4 hardware? Thanks for any responses.

I wanna add my 2 cents about the PMU reset. Sometimes it may take multiple resets to get everything to work. I had an instance where the machine seemed dead, first PMU reset brought it partway back to life, and the second one fixed it. The important thing is to run through the whole process.
I would disconnect everything from the computer (including the power), remove the battery and let the computer sit for awhile (hour or so). Then I would hold down the PMU button for 5 secs. Then connect only the basics (power, monitor, keyboard, mouse) and try to start it. If it doesn't work, try going through the whole process again.

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HT3964 MacBook 2007 won't start up all of the way it gets the loading circle thing then it just keeps going and a bar thing pops up to load but doesn't and about a few minutes and it shut off. I don't have a disk for the computer or another Mac so what do

need help MacBook 2007 won't start up all of the way it gets the loading circle thing then it just keeps going and a bar thing pops up to load but doesn't and about a few minutes and it shut off. I don't have a disk for the computer or another Mac so what do I do?

I don't have the disk and i tried the shift key and it didn't do anything, i have tried like everything but it won't work and i was givin this computer with a charger and that is all nothing came with it and i don't think that it had the lion thing on it either i never got to that it just won't turn on and i have another mac that was a family members but it won't turn on either at all it won't load anything the screen stays black. so i don't really know at all what to do is there anything else? i don't want to take it anywhere because i have no money for that, and i need this computer for school. Any sugestions?

17" Macbook Pro won't start at all. I shut it down last night at 80% and now there is only black screen, no light, no sound. What to do?

My 17" Macbook Pro won't start at all. I shut it down last night at 80% and today I get only a black screen with no sound, no light, nothing. The power cord light does show orange when plugged in. I don't know exactly which OS it is. It's model # A1286. I've tried all the tips about holding down different keys to no avail. Anyother ideas? (The serial # is w8******agu if that helps.) Many thanks.
<Edited By Host>

I had the exact same issue... Macbook Pro late 2008 with Core2Duo. Went to all the steps suggested in the knowledge base, tried to reset the SMC, but to no avail. Took it to the Macstore in Mexico, the wanted to replace logic board for $800.... Finally, I sent it to a logic board repair service, where they "fixed" the logic board for $200. It worked perfectly for 4 months, then happened again
Any ideas?? I would appreciate any help!!!!!

ITunes kept freezing and now it won't start at all

It all started when I downloaded an iTune U class that contained a lot of videos and chose to download all old episodes. It turned out there so many that it would take 25 hours. I tried to abort the downloads, but apparently that messed something up.
First iTunes started up normally, tried to download "83 items" and then started to freeze up after a minute. I had to shut it down via the Task Manager.
Then it got worse, and now it won't start at all. After I click on the icon to open iTunes (I have Windows 8) the screen turns white, the blue wheel spins and nothing happens. When I hold the cursor over the iTunes icon in the task bar I can see two preview tiles (one for Download and one for iTunes itself), but both are blank (all white) and nothing happens - the blue wheel will spin forever. What do I do?
I do have the latest version of iTunes. If I uninstall and reinstall iTunes, will that solve the problem? And will the content of my library still be there? Thanks!

Hello, J Appleseed.
Thank you for visiting Apple Support Communities.
You can try an uninstall and reinstall of iTunes to see if that resolves the issue. Your iTunes library will not be deleted by doing this. However, this issue could be a result of multiple issues so an uninstall/reinstall may not resolve this. Below, I have included the best articles that will help you isolate and possibly correct this issue. Process each step and test the results after each step processed.
Removing and reinstalling iTunes and other software components for Windows Vista, Windows 7, or Windows 8
http://support.apple.com/kb/ht1923
iTunes for Windows Vista, Windows 7, or Windows 8: Fix unexpected quits or launch issues
http://support.apple.com/kb/ts1717
iTunes: Troubleshooting security software issues
http://support.apple.com/kb/ts3125
Apple software on Windows: May see performance issues and blank iTunes Store
http://support.apple.com/kb/ts4123
Cheers,
Jason H.

My MacBook Pro is crashing and Mac OS stops working sometimes so I have to restart it. And sometimes it stays on the first white-ish screen with the Apple and won't start further. What to do?

my MacBook Pro is crashing and Mac OS stops working sometimes so I have to restart it. And sometimes it stays on the first white-ish screen with the Apple and won't start further.
What to do?
Does that mean that the is the end of my Mac Book 5bought in the summer of 2009) ? Or is there someting to do to fix it?
Thanks
V

Try this:
How to Perform an Archive and Install
An Archive and Install will NOT erase your hard drive, but you must have sufficient free space for a second OS X installation which could be from 3-9 GBs depending upon the version of OS X and selected installation options. The free space requirement is over and above normal free space requirements which should be at least 6-10 GBs. Read all the linked references carefully before proceeding.
1. Be sure to use Disk Utility first to repair the disk before performing the Archive and Install.
Repairing the Hard Drive and Permissions
Boot from your OS X Installer disc. After the installer loads select your language and click on the Continue button. When the menu bar appears select Disk Utility from the Installer menu (Utilities menu for Tiger, Leopard or Snow Leopard.) 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 click on the Repair Permissions button. Wait until the operation completes, then quit DU and return to the installer. Now restart normally.
If DU reports errors it cannot fix, then you will need Disk Warrior and/or Tech Tool Pro to repair the drive. If you don't have either of them or if neither of them can fix the drive, then you will need to reformat the drive and reinstall OS X.
2. Do not proceed with an Archive and Install if DU reports errors it cannot fix. In that case use Disk Warrior and/or TechTool Pro to repair the hard drive. If neither can repair the drive, then you will have to erase the drive and reinstall from scratch.
3. Boot from your OS X Installer disc. After the installer loads select your language and click on the Continue button. When you reach the screen to select a destination drive click once on the destination drive then click on the Option button. Select the Archive and Install option. You have an option to preserve users and network preferences. Only select this option if you are sure you have no corrupted files in your user accounts. Otherwise leave this option unchecked. Click on the OK button and continue with the OS X Installation.
4. Upon completion of the Archive and Install you will have a Previous System Folder in the root directory. You should retain the PSF until you are sure you do not need to manually transfer any items from the PSF to your newly installed system.
5. After moving any items you want to keep from the PSF you should delete it. You can back it up if you prefer, but you must delete it from the hard drive.
6. You can now download a Combo Updater directly from Apple's download site to update your new system to the desired version as well as install any security or other updates. You can also do this using Software Update.

If the system won't start at all

I have just purchased a MSI K8Neo 2 FX S939 motherboard second hand. I have installed a AMD 64 3200+ CPU and two 256M DDR333 memory modules
and a NVIDIA 6600GT 256M DDR3 videocard on it. These components worked prior on another motherboard. Now the system won't start at all.
The following observations has been made.
1) All fans start to spin including CPU fan videocard fan and the fan on the mb chip and the power LED lits up.
2) Nothing else happens. No display no sound from the internal PC speaker.
3) If I press the reset button nothing happens at all
4) I must press the power button for several seconds to turn of the power from the system
5) The mobo was not delivered in a ESD bag but wrapped in towels. Does that make ESD damage likely?
What conclusions can be made from that? My own opinion is that the CPU never starts working. Otherwise shouldn't there be some beep from the PC speaker when an error is detected? I have carefully checked all connections

Quote from: Henry on 29-April-09, 07:26:15
Q-Tec PSU.
You are wasting your and our time untill you get rid of that piece of garbage, you are lucky anything at all worked with it.
Buy a real PSU, not a wanna-be like Q-Tec. For that PC a Corsair CX400W (+12~30A) 0r VX450W (+12V~33A) would be good. If you might need more power for the future you might want to consider on of the Corsair TX series or PC P & C 610W or 750W. Whatever you do don't get a cheap PSU, get one you can depend on.
Yes I know I shouldn't ask much of a Qtec PSU but I doubt that it is the reason for this problem. Even a QTec should be able to let the speaker make a beep sound at least. My current MSI setup require rather little power. Got no PCI cards or USB units. Only one harddrive and one DVD Rom. According to the web power supply calculator I need a little bit over 200W and the PSU you suggests would be expensive
http://www.extreme.outervision.com/psucalculatorlite.jsp

Satellite L30 PSL33E won't start at all - LED flashes six times

Hello,
My poor mother is quite distraught! Her Satellite L30 PSL33E has just died.
It completely shut down and now won't start at all.
Orange light flashes six times when the power button is pressed.
No hard drive, fan, screen or any other noise / activity.
She has tried it without the battery.
Some sort of hardware failure I imagine.
Any ideas what this blink code means?
Thanks in advance,
D.

I dont know what the code means but you can read it; short means 0 and long means 1
Anyway, the error code means that an hardware fault was detected on the motherboard and only the motherboard replacement could help you?
Why?
because is really hard to repair a notebooks motherboard.
Its mostly not possible if you dont have enough knowledge, experience and special tools.
I think either you will contact the ASP in your country and will ask for a fix or you will have to buy a new notebook ;(

Satellite P300-13M won't start at all

Hello everybody,
my Satellite P300 - 13M with product number PSPC4E won't start at all!
When I put down my screen, it automatically goes in hibernation mode. But the last time I did this was just too much apparently.. I've ejected my battery and put the adapter in to see if it would start. Negative. I've put the battery back and ejected the adapter. Negative. I've connected both the battery and adapter. Negative, no result at all.
Does this mean the end of my laptop?
Please help me as fast you guys can because this is my only working laptop.
Many thanks
Ps if you want specifications, then i cannot give you them. I don't know the specs by heart.

On this virtual way it is not easy to say what is wrong there but if there is no reaction at all Im afraid mainboard is death.
In my opinion repair is probably not the solution. New motherboard costs a lot of money. Either you can find used one, maybe refurbished and exchange it or sell notebook on eBay and buy new one.

Satellite Pro 2100 won't start at all - LED start flashing

My SP2100 has started having power problems, and now won't start at all. The AC adapter green LED is on, as are the relevant lights on the laptop body (although the 'battery charging' light always stays orange these days). When I attempt switch on, boot up starts (and has in fact been successful on occasion until this morning), however the battery indicator and the adapter lights start flashing, and everything shuts down again.
On the rare occasions when I get past this stage, the lights keep flashing, and the system soon shuts down again with a 'low battery' screen message. Until this morning, it would sometimes settle down, the computer stayed on, and the lights showed a steady state as normal.
I initially thought that the problem was obviously the battery or the AC adapter, but now I'm beginning to think that it lies with laptop's internal power adapter (although I suspect that the battery is probably shot following all this part charging and discharging).
Any ideas?

Hi,
I think you are right. Flashing LEDs are a sign that some hardware is faulty.
I can't say what's exactly the problem, this should be checked by a technicain.
On the other side I'm not sure if it is worth to repair such an old machine.
Bye

Pavilion G6-1b59wm won't start at all

Good day .. I have a Pavilion G6 that won't start at all when the power button is pushed. I've tried it on battery only, and with the power cord plugged in. Yet nothing.
Here is what I see: When the power cord is plugged in, the power LED next to the port is white. I press the power button and it momentarily flashes white (and the F12 LED flashes). Nothing else happens. No other LEDs lite, and the screen remains black.
DIagnostic steps followed:
1. Battery was removed, and unit unplugged. Power button held for 30 seconds, and plugged back in. Nothing.
2. Battery removed and unit plugged into the wall. Power button pushed and nothing.
3. Tried a different power cord, different battery .. nothing
4. Removed the RAM boards, power button pushed .. nothing
5. Removed the hard drive (RAM still uninstalled), power button pushed .. nothing
Any further suggestions ?
This question was solved.
View Solution.

This should help you locate:
http://www8.hp.com/us/en/store-finder/index.do
Wish you luck,
Karthik
--Say "Thanks" by clicking the Kudos (purple thumbs up icon in the lower right corner of a post)
--Please mark the post that solves your problem as "Accepted Solution"

Safari keeps crashing and won't start at all.

My Safari keeps crashing and won't start at all. Im using Yosmite.
What should i do?

If you have another browser:
     Use free AdwareMedic by clicking “Download ” from here
     http://www.adwaremedic.com/index.php
     Install , open, and run it by clicking “Scan for Adware” button   to remove adware.
     Once done, quit AdwareMedic by clicking AdwareMedic in the menu bar and selecting
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               or
If you don’t have another browser:
     Remove adware manually by following the “HowTo” from Apple.
    “Remove Genieo, also known as InstallMac”
    http://support.apple.com/en-us/HT203987
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I killed a MacBook Pro. Shutdown with flash in drive and now it won't start at all.

I may have killed my MacBook Pro OS X by accidentally restarting with a Flash Drive it it and now it won't start at all. Any ideas?

So it is powering on. You did not state that before. In that case:
Reinstalling OS X Without Erasing the Drive
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 the Hard Drive and Permissions: Upon startup select Disk Utility from the main menu. Repair the Hard Drive and Permissions as follows.
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 click on the Repair Permissions button. Wait until the operation completes, then quit DU and return to the main menu.
Reinstall OS X: Select Reinstall OS X and click on the Continue button.
Note: You will need an active Internet connection. I suggest using Ethernet if possible because it is three times faster than wireless.
Also see this if above doesn't work:
Install OS X from Scratch
Be sure you backup your files to an external drive or second internal drive because the following procedure will remove everything from the hard drive.
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.
Erase the hard drive:
1. Select Disk Utility from the main menu and click on the Continue button.
2. After DU loads select your startup volume (usually Macintosh HD) from the
      left side list. Click on the Erase tab in the DU main window.
3. Set the format type to Mac OS Extended (Journaled.) Optionally, click on
      the Security button and set the Zero Data option to one-pass. Click on
      the Erase button and wait until the process has completed.
4. Quit DU and return to the main menu.
Reinstall OS X: Select Reinstall OS X and click on the Install button.
Note: You will need an active Internet connection. I suggest using Ethernet if possible
           because it is three times faster than wireless.
This should install the original version of OS X that came on the machine.

I have a mac g 5 and i uploaded Microsoft Office 2008 for my 90 year old mother. Now when she tries to open earlier word docs, they won't open at all :-( what happened?

HELP!!! i have a mac g 5 and i uploaded Microsoft Office 2008 for my 90 year old mother. Now when she tries to open earlier word docs, they won't open at all :-( what happened? I SEE THE WORD IN THE NAVIGATION BAR BELOW, but when she tries to open a word doc, the navigation bar opens and closes around the Word symbol and nothing happens :-( i'm going crazy :-( PLEASE CAN SOMEONE HELP AND LET ME KNOW WHAT TO DO?

If you have not already done so, repair permissions and restart your computer. Or boot up from your install DVD and run "Repair Disk" from the Utility menu. When done, restart back to your desktop, repair permissions and restart your computer. Suggest that you post in the Microsoft Office for Mac Forums if the above does not work.

IPod touch won't start at all!

Hi all,
My iPod touch is a 2nd gen. version3.1.2 . I did a restore from iTunes and now my iTouch won't start at all. I think it's dead, someone please help me!

First ? would be is it charged sorry got to ask. Did you try and hold the button on top and the one on the front at the same time and keep holding it even when the turn power slide shows don't let go until you see the apple than let go. than try to turn it on. Sometimes they freeze it happen to me when I first got it.

IPhone 3GS won't start at all...please help

My iPhone 3GS won't start at all, it only shows the apple logo untill the battery runs out and it keeps on doing that. It happened after I erased all contents & settings. I tried pressing home button & power button for 15 seconds too, it didn't work. Any other ideas?

while turned off, connect that to the wall charger, it should start normally
after few minutes.
if it dont start then put your phone in dfu mode and connect to itunes for
a restore. for dfu mode search google.

G4 won't start at all - what do symptoms suggest please?

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