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My brother has Lenovo thinkpad laptop,he decided to format his laptop,but after format he couldn't power on his laptop because power-on password is required so what is power-on password and how to bypass it,we tried to remove batteries but no way...so please tell me how to solve this problem?

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Sorry for that but my country is passing very bad conditions with no internet ,no electricity. so i am sorry about that. – Anees Bakrain May 24 '11 at 6:53
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On any relatively new ThinkPad, there is no way around this short of attemping to short the power to some chips, which in untrained hands is a good way to fry the motherboard entirely. Unlike a lot of BIOS level settings, including passwords on some other machines, removing the CMOS battery will NOT reset a power-on password on a ThinkPad.

Lenovo's remedy for this is a motherboard replacement.

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This is designed to block any access to the system.

Lenovo has some tips for their older units. Not sure if it applies Reset password

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This does not work on anything newer than the machines listed (all of which are antiques). – Shinrai May 16 '11 at 14:15
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