Question about IBM ThinkPad R52 Notebook

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Bios lock IBM THINKPAD ,MODEL NO 2647-8EU

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Hi,
It sounds as though your computer has the wrong time in the CMOS. The CMOS (Complementary Metal-Oxide Semiconductors) is the chip that holds the basic startup information for the BIOS, system and its peripherals while the system is turned on and off.

If you can get into the BIOS check the date and time settings and make sure they are correct.

It may also be a case of the CMOS battery going out. When this happens your computer will tend to not keep the correct time. They are cheap and relatively easy to replace. Before buying a new batter your can try to take it out and let it sit for about 10 minutes or so to reset the CMOS and then go put the battery back in and go into the BIOS and reset the clock.

Hopefully taking the batter out or replacing it will get past your lock icon asking for the password. Just search for CMOS or BIOS default password for your brand of laptop.

Posted on Feb 03, 2009

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The solution is different for each model, so if it's not on the list it probably won't work. IBM bios issues usually involve motherboard replacements or the epprom needs to be changed in order to access it. If the person who gave it to you, is there a chance you can get the information? you can try ebay, there are sellers who claim they can resolve the problem.

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The IBM Thinkpad has a very strong security system.

If you are seeing a lock symbol when booting then somebody has set the supervisor password. If you can't remember it or guess it (try "password", "admin", "pass", etc) then you need to find the person that set the supervisor password.

Once the supervisor password is set the T41 is very well protected and it can't be reset by removing the laptop battery or CMOS battery.

There is a way to read the password from the protection chip but this is very complicated and requires taking the laptop apart and building your own chip reader.

The instructions for doing this are are:

http://sodoityourself.com/hacking-ibm-thinkpad-bios-password/

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Please note that Thinkpad stores the password in a special security chip which is accessed during boot time.

The only option I know to reset BIOS password in a Thinkpad is to disassemble the system and then use the steps mentioned in the following link

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Some of the older thinkpad had a program you from the OS or a boot floppy to had to run to get change the bios settings. But the BIOS key on most is F1. So if you press that key as soon as you turn the machine on and anything appears on the screen, and once you've provided the password you can then change the password to blank within the bios.

If you don't know the password at all, there may still be a way to reset it, but it may require a call to IBM/Lenov, or some other tedious process.

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Get manual on google.com how to remove bios password

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