Released June 3, 2007. Identified by model number T42 of the ThinkPad T40 series.

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Can I retrieve default bios password

i removed back up battery to get rid of passwords now computor wont start get error message saying security tampered with, is there any thing i can do ?

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Here is a link to the service manual for your computer. Download and there is a section on resetting passwords.

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I find an article about how to reset BIOS password on Windows laptop, you can read it in

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brian will be eternally grateful.
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