Question about Toshiba 4030CDT (P000271450) Motherboard

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Toshiba psl48l bios resetting

Somebody put a supervisor password in my laptop

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To reset the BIOS password you need to remove the CMOS battery from the motherboard of the laptop. This will require you to take apart pieces of the laptop which can be a little tricky, if you don't feel comfortable doing so , I would recommend taking it to a professional...I just don't want to see someone break there laptop!

On your particular model there is a cable running from the battery to the motherboard , you need to remove that wire from the motherboard and wait about 15-20 seconds, then plug it back in and restart the computer....that will completely reset your BIOS settings and remove your password....below is a picture for reference!

toshiba psl48l bios resetting - c21f1b3.jpg

If you found this post helpful , please leave a rating! I apprecaite it!

Posted on Oct 02, 2008

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I need to reset my Toshiba laptop. It has been a couple of years since I have used the laptop; therefore, I have forgotten the password.


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    Unknown bios password prevents bootup


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    Remove CMOS battery inside of the motherboard and "short" contacts. wait about 5 minutes and replace battery. It should reset bios to factory status. Won't affect your operating system and hard drive.

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    How unlocked a supervisor password?


    You can either type the password and remove it in the bios or clear the bios code.

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    The BIOS and Supervisor passwords cannot be removed or changed unless you know the existing password(s). If you forget your BIOS or Supervisor password, you will have to have the password removed by a Toshiba Authorized Service Provider.

    Dec 19, 2012 | Toshiba Satellite A355D-S6930 Turion X2...

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    2) Remove all the batteries and unplug the machine, short the BIOS (small) battery holder for several seconds, put it back together and switch on. If still demanding a password, try the passwords above or the backdoor ones for your machine again,
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    1 Answer

    Bios password reset


    from the Toshiba support site

    The BIOS and Supervisor passwords cannot be removed or changed unless you know the existing password(s). If you forget your BIOS or Supervisor password, you will have to have the password removed by a Toshiba Authorized Service Provider. Although the prompts for these two passwords have the same appearance, the passwords are set and removed differently. If both are set, the Supervisor password takes precedence.

    I assume that the notebook will have a BIOS battery similar to a standard PC. If you are happy to disassembe it you may be able to reset the BIOS by removing the battery and/or locating the bios reset jumper

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    A lot of Toshiba computers remove the password when you boot it up with the loopback connected

    It can be made out of a 25pin male connectors (db25). Connect these pins: 1-5-10, 2-11, 3-17, 4-12, 6-16, 7-13, 8-14, 9-15, 18-25

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