Ibook stuck on the grey loading screen

Stupidly i was messing around and accidentally unlocked the battery which fell out while my ibook was on sleep method. Now the ibook will only start up and get stuck on the grey loading screen.
I fear i have corrupted the hard drive, i have tried resetting the logic board by logging into the base router( i don't know if thats the right terminology), i did this by pressing power, then holding down apple key and v. But when i do this after the normal writing on the screen finishes, a message comes up saying
"Warning completing a zero block transfer"
I have reset my logic board before but this message has not come up.
Any help resolving this issue would be fantastic.
Thanks in advance!!!!!!!

Not resetting?
Well that presents a problem because you need to check the startup disk, repair the disk if necessary, or restore OS X using OS X Recovery
You can resstore from a Time Machine backup using OS X Recovery if necessary.

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My mac is stuck on the grey loading screen?

My mac, is stuck on the grey startup screen. I have tried everything that everyone has said. Yes, I have reset the PRAM, I have tried a safe reboot, I'm NOT resetting it! It just won't start up, I have a seagate 3TB backup drive, but I have no way to get inside the computer, so I can't activate it.
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Not resetting?
Well that presents a problem because you need to check the startup disk, repair the disk if necessary, or restore OS X using OS X Recovery
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I have tried everything online and my iBook g4 wont stop freezing. Safe Mode doesnt even help, it still gets stuck on the blue screen! It either gets stuck on the grey loading screen or the blue screen. Rarely I am able to boot past everything and get to my desktop but after about 30 seconds it freezes again. This laptop was passed down to me and I have no original papers or disks that came with this laptop. I am really trying to figure this out without buying a disk because if it doesnt work I wont be out $60. Someone help I have tried putting it in safe mode single mode holding c down during start up! I need more options.. Please this is the only computer I have right now! (PS: I know warranty has expired a long long time ago)

Hello,
Some information you may or may not have read.
Troubleshooting portables that won't turn on or start up
http://support.apple.com/kb/TA25686?viewlocale=en_US
Troubleshooting: My computer won't turn on
http://support.apple.com/kb/TS1367
Without the disk you are limited on options. It could be an issue with the hard drive and would required the disk to run disk utility.

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Take each of these steps that you haven't already tried. Stop when the problem is resolved.
Step 1
The first step in dealing with a boot failure is to secure your data. If you want to preserve the contents of the startup drive, and you don't already have at least one current backup, you must try to back up now, before you do anything else. It may or may not be possible. If you don't care about the data that has changed since your last backup, you can skip this step.
There are several ways to back up a Mac that is unable to boot. You need an external hard drive to hold the backup data.
a. Boot into the Recovery partition, or from a local Time Machine backup volume (option key at startup.) When the OS X Utilities screen appears, launch Disk Utility and follow the instructions in this support article, under “Instructions for backing up to an external hard disk via Disk Utility.”
b. If you have access to a working Mac, and both it and the non-working Mac have FireWire or Thunderbolt ports, boot the non-working Mac in target disk mode. Use the working Mac to copy the data to another drive. This technique won't work with USB, Ethernet, Wi-Fi, or Bluetooth.
c. If the internal drive of the non-working Mac is user-replaceable, remove it and mount it in an external enclosure or drive dock. Use another Mac to copy the data.
Step 2
Press and hold the power button until the power shuts off. Disconnect all wired peripherals except those needed to boot, and remove all aftermarket expansion cards. Use a different keyboard and/or mouse, if those devices are wired. If you can boot now, one of the devices you disconnected, or a combination of them, is causing the problem. Finding out which one is a process of elimination.
If you've booted from an external storage device, make sure that your internal boot volume is selected in the Startup Disk pane of System Preferences.
Step 3
Boot in safe mode. Note: If FileVault is enabled, or if a firmware password is set, or if the boot volume is a software RAID, you can’t do this. Post for further instructions.
Safe mode is much slower to boot and run than normal, and some things won’t work at all, including wireless networking on certain Macs.
The login screen appears even if you usually log in automatically. You must know your login password in order to log in. If you’ve forgotten the password, you will need to reset it before you begin.
When you boot in safe mode, it's normal to see a dark gray progress bar on a light gray background. If the progress bar gets stuck for more than a few minutes, or if the system shuts down automatically while the progress bar is displayed, your boot volume is corrupt and the drive is probably malfunctioning. In that case, go to Step 5.
If you can boot and log in now, empty the Trash, and then open the Finder Info window on your boot volume ("Macintosh HD," unless you gave it a different name.) Check that you have at least 9 GB of available space, as shown in the window. If you don't, copy as many files as necessary to another volume (not another folder on the same volume) and delete the originals. Deletion isn't complete until you empty the Trash again. Do this until the available space is more than 9 GB. Then reboot as usual (i.e., not in safe mode.)
If the boot process hangs again, the problem is likely caused by a third-party system modification that you installed. Post for further instructions.
Step 4
Sometimes a boot failure can be resolved by resetting the NVRAM.
Step 5
Launch Disk Utility in Recovery mode (see Step 1.) Select your startup volume, then run Repair Disk. If any problems are found, repeat until clear. If Disk Utility reports that the volume can't be repaired, the drive has malfunctioned and should be replaced. You might choose to tolerate one such malfunction in the life of the drive. In that case, erase the volume and restore from a backup. If the same thing ever happens again, replace the drive immediately.
This is one of the rare situations in which you should also run Repair Permissions, ignoring the false warnings it may produce. Look for the line "Permissions repair complete" at the end of the output. Then reboot as usual.
Step 6
Reinstall the OS. If your Mac was upgraded from an older version of OS X, you’ll need the Apple ID and password you used to upgrade.
Step 7
Repeat Step 6, but this time erase the boot volume in Disk Utility before installing. The system should automatically reboot into the Setup Assistant. Follow the prompts to transfer your data from a Time Machine or other backup.
Step 8
This step applies only to older Macs (not current models) that have a logic-board ("PRAM") battery. Both desktop and portable Macs used to have such a battery. The logic-board battery is separate from the main battery of a portable. A dead logic-board battery can cause a gray screen at boot. Typically the boot failure will be preceded by loss of the startup disk and system clock settings. See the user manual for replacement instructions. You may have to take the machine to a service provider to have the battery replaced.
Step 9
If you get this far, you're probably dealing with a hardware fault. Make a "Genius" appointment at an Apple Store to have the machine tested. If you can't get to an Apple Store, go to another authorized service provider.

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No backups? Then I would, were I you, definitely order an inexpensive USB enclosure to try to rescue the files. Most companies in the US ship to the Phillipines, don't they? Where do you usually shop for computer gear? I don't know how much space/speed you really want but Seagate's 1 terabyte SSHD is an economic route to go for the 'feeling' of a SSD. I can also recommend Hitachi and Toshiba drives.
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If the Mac is on switch it off.
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Hi, and welcome to Apple Discussions.
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Resolution
Note: Some steps below may reset preference settings or registration settings.
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Hello @ Jjradb
Welcome to the HP support boards. Lets see if we can help you out with your boot issue.
If you could please post back with your complete system information. What I will need is your complete model number and product number, along with that your notebooks Operating System.
Here is a link you can use that will help you find your model and product number for your hp notebook.
How Do I Find My Model Number or Product Number?
One thing you can try until you post me that information is. This resolution was provided by @DavidPK on the following link.
My Hp Laptop freezes at the startup screen.. Help!
Thank you
Please click the "Thumbs Up" on the bottom right of this post to say thank you if you appreciate the support I provide!
Also be sure to mark my post as “Accept as Solution" if you feel my post solved your issue, it will help others who face the same challenge find the same solution.
D5GR
I work on behalf of HP

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Ibook stuck on the grey loading screen

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