When starting up my PowerBook running OS10.3.9, I'm asked for a user password. After about 3 months of always accepting the password and continuing on with the start-up, the password is now NOT being accepted and therefore the start-up is stalled at that password screen. No new software has been added recently that I can think of. Any help out there as to why a user password would change, or more critically, what I can do to get my PowerBook to complete its start-up?

Dani AI

Generated

A few focused checks and safe recovery options for a sudden “password not accepted” at macOS 10.3 startup. ’s thread shows this can be fixed, but it’s worth working through a few diagnostics that find the root cause and reduce data risk. As suggested, start with the simple input checks; as noted, timing with third‑party software can correlate with the problem — that doesn’t mean the app changed your password, but it can expose disk/extension problems.

Non‑destructive checks

  • Verify Caps Lock and keyboard layout (try an external keyboard if available).
  • Disconnect all USB/FireWire peripherals and reboot (a stuck device can interfere).
  • Reset PRAM/NVRAM: reboot and hold Command-Option-P-R until you hear the startup chime twice.
  • Boot safe mode (hold Shift) to see if the machine accepts the password with third‑party items disabled.

If those don’t help: check disk health from single‑user mode (this is safe if you only read/repair). Boot holding Command-S; at the prompt run:

/sbin/fsck -fy
/sbin/mount -uw /

If fsck reports fixes, reboot and try logging in again.

Create a new admin (when you cannot recover the account)
If you need an administrative way back in, remove the Setup flag so the Setup Assistant runs on next boot and lets you create a new admin. From single‑user mode (after the two commands above):

rm /var/db/.AppleSetupDone
reboot

Cautions and data protection

  • If FileVault (home‑folder encryption) is enabled, resetting or replacing the login password incorrectly can make the encrypted home folder inaccessible. If FileVault is in use, stop and back up the disk first, or use the FileVault master password.
  • If you can’t boot normally, use Target Disk Mode (hold T at startup) and copy data to another Mac over FireWire before destructive steps.
  • After regaining access, run Disk Utility to repair the volume and check Console logs for authentication or disk‑related errors to avoid recurrence.

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Hello,

Is there something about the password that could be different, such as is your caps lock on or not?

Do you have any other accounts on the machine, such as another administrator account, or did you enable the root account? If so, you can get into the machine from there, and do some password management on the original account.

Let us know,

Christian

Thanks... I was able to start up from my installation CD, and was then able to reset my password. Still no clue as to why my original password stopped being valid, but at least the start-up could complete now.

When starting up my PowerBook running OS10.3.9, I'm asked for a user password. After about 3 months of always accepting the password and continuing on with the start-up, the password is now NOT being accepted and therefore the start-up is stalled at that password screen. No new software has been added recently that I can think of. Any help out there as to why a user password would change, or more critically, what I can do to get my PowerBook to complete its start-up?

I am having the same problem with my Sony Vaio, every blue moon, the user password does not get accepted for some reason. I may have it narrowed down to a program that I use. Yesterday I used Macromedia Flash MX, and then this morning, boom, did not take my password. Do you use Flash Mx, if not, what other programs did you use the day before you had the problem or the day you turned off the computer prior to trying to start it up. To get mine to boot, I started it in the safe mode by turning it off and on, it did NOT take the pass word, however, it allowed me to get on as a default user, then, that allowed me to do a system restore, to the previous day, then, all was well, it took my password again. I really think it does have something to do with usning Flash. Let me know, Chris

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