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IBM thinkpad 755Cs w/ a forgotten power-on-password

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dayleh

Vendor
Joined
Nov 12, 2003
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US
Does any one know how to reset the bios or power-on-password for a IBM thinkpad 755Cs? I tried removing the the batteries and left them out for about a week but no luck. I called IBM but they want to charge me an arm and a leg to have it removed. I have heard that you can jump pins on the bios chip but have not been able find out how to go about it. Any help would be great. Thanks
 
Did you remove the CMOS battery?
 
Yes I removed the battery pack, the backup battery and the stand-by battery. I have had the whole thing apart and put back together a couple of times. I have also bought the hardware naintenance manual from IBM and the section that is suppose to have the instruction on how to disable and bipass the power-on-password sayes that I should see my IBM Servicer or IBM Authorized Dealer for this procedure, but I can't find anyone with the knowledge of how to do this.

 
If there's no small watch battery mounted on the MB, then is there anything in the manual for clearing CMOS with a MB jumper?

If not, and the floppy drive is accessible, then you can flash the BIOS.

If the FD is not accessible, then I'm out of ideas, other than replacing the MB or having IBM do it.
 
This laptop has no jumpers or battery on the mother board itself, and it doesn't even boot to the bios so there is no way the floppy will work.
 
Ok I replaced the bios security chip today and that got rid of the bios password but I still have a harddrive password. Any ideas on how to get rid of this? I cannot boot from the floppy disk to use a boot disk.

Any ideas??

thanks
 
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