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  • Posts: 2
  • Registered: ‎08-12-2010
  • Location: USA
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A20m battery dead, recharged, holds charge, won't complete boot- get lock symbol after bios chk

2010-08-12, 13:03 PM

This ThinkPad worked fine prior to getting tucked away in a closet.  After 1.5 years the battery was as expected -- dead.  I recharged the computer and the Thinkpad holds the charge fine. 


It will initiate the boot sequence, the blue screen comes up and it goes through bios check.  Then I get a black screen with a lock symbol...which I am guessing is in need of a password entry....the problem is I did not have a boot password set on this machine and never entered one prior to the battery going completely dead.


Now I can not get the computer to finish booting and loading Windows 98 and hence giving me access to the hard drive.  I tried booting from the CD drive but that didn't work either. I have a 3.5" drive but no boot floppy


 Is there a solution to my problem if I have no idea what password this machine thinks it needs?


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  • Posts: 7651
  • Registered: ‎11-24-2007
  • Location: USA
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Re: A20m battery dead, recharged, holds charge, won't complete boot- get lock symbol after bios chk

2010-08-14, 4:20 AM

Welcome to the forum!

You're not going to like what I'm about to say...

Tucking the machine away obviously drained the CMOS (BIOS) battery along with the main one. When this happens, if the Supervisor password was set in the past - likely before you even got the machine - you'll be prompted to enter it with the lock symbol that you've seen.

There's no way around that maze, since password cracking techniques are not to be discussed on this forum.

Replacement motherboard is the way out, or getting a new laptop altogether.

Good luck.



In daily use: R60F, R500F, T61, T410

Collecting dust: T60

Enjoying retirement: A31p, T42p,

Non-ThinkPads: Panasonic CF-31 & CF-52, HP 8760W

Starting Thursday, 08/14/2014 I'll be away from the forums until further notice. Please do NOT send private messages since I won't be able to read them. Thank you.
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