Question about Dell Dimension 4300 PC Desktop

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Dell dimension 4300 forgot main password

When I turn on my computer it ask for a password that I forgot how do I reset it?

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  • pigmygoatz Mar 21, 2009

    Can't get passed password after power on. Pulled battery but still wants password. How can I completely wipe?


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Get a motherboard manual from
Look for jumper 1.
remove jumper 1.
Power on.
Wait till PC powered on then power off.
Replace jumper.
this will reset ALL BIOS setting including password.
Please let me know if this helps.

Posted on Mar 14, 2008


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While unit is off, disconnect power cord, press power button to disipate any stray voltage, open case, remove the "Button" cell battery on the motherboard, this will effectively errase the cmos settings and that password. Still with the battery removed, attach power cord and reboot the machine, you'll get a error to go to setup and reset time, date, etc. after setup is complete turn off machine and re-install battery, reboot.

Posted on Mar 14, 2008

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Follow the instruction by clicking on the link

Posted on Nov 17, 2008

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Posted on Jan 02, 2017

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