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Hardware Thread, BIOS password in Technical; rite - i have a hp envy 15 laptop where the password on boot has been enabled by someone other ...
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    mjs_mjs's Avatar
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    BIOS password

    rite - i have a hp envy 15 laptop where the password on boot has been enabled by someone other than the owner. I cannot boot from anything. Has anyone got any ideas how i can get out of this predicament?

    many thanks for any and all suggestions

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    Can you find the jumper/dip switch on the laptop to reset the password using that method? Or remove the cmos battery for some time and then put it back. What bios does this laptop have? On some bios's you can get software to crack the password, however i've never used this method so i'm not sure how reliable it is.

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    plexer's Avatar
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    Most laptops do not have a switch like that or an accessible battery and even if they do the password could be in an eeprom chip.

    Ben

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    mjs_mjs's Avatar
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    Quote Originally Posted by ihaveaproblem View Post
    Can you find the jumper/dip switch on the laptop to reset the password using that method? Or remove the cmos battery for some time and then put it back. What bios does this laptop have? On some bios's you can get software to crack the password, however i've never used this method so i'm not sure how reliable it is.
    thanks, urm ideally taking the thing apart to find a jumper/battery is the last resort. i can't crack the password as i can't boot into anything to run a crack from but good thinking on the cmos battery - will have a look in the service manuals now. thanks

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    Quote Originally Posted by mjs_mjs View Post
    rite - i have a hp envy 15 laptop where the password on boot has been enabled by someone other than the owner. I cannot boot from anything. Has anyone got any ideas how i can get out of this predicament?

    many thanks for any and all suggestions
    Few options,

    If you're happy with the hardware, try removing CMOS battery to reset it. ( or jumpers )

    Try to crack it using software like ibios.

    Find the manufacturer and try their standard backdoor bios passwords, that most machines have.

    Steve

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    mjs_mjs's Avatar
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    will removing the cmos battery should i find one simply reset the bios back to it's defaults? how likely is it to break the laptop (not that it's currently usable)?

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    Quote Originally Posted by mjs_mjs View Post
    will removing the cmos battery should i find one simply reset the bios back to it's defaults? how likely is it to break the laptop (not that it's currently usable)?
    All it does is power the chip that remembers how the bios is configured, boot order etc.

    Thus if removed long enough defaults apply again (assuming you have no other hidden batteries etc)

    Steve

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    Best of luck getting to the CMOS battery on a laptop. I know some can be a nightmare to get to. Toshiba on the other hand have 2 bits of solder that need touching together which reset the BIOS, cant believe a company wanted £50 to do this.... Madness

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    plexer's Avatar
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    What is the actual model number for this laptop?

    Ben

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    mjs_mjs's Avatar
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    hp envy 15, product no VY195EA#ABU, model 15-1110ea

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    plexer's Avatar
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    Page 48 of the service manual is real time clock batter removal:

    http://h10032.www1.hp.com/ctg/Manual/c02131229.pdf

    HP service manuals are very good for dismantling.

    Ben

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    mjs_mjs (7th May 2011)

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    mjs_mjs's Avatar
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    Quote Originally Posted by plexer View Post
    Page 48 of the service manual is real time clock batter removal:

    http://h10032.www1.hp.com/ctg/Manual/c02131229.pdf

    HP service manuals are very good for dismantling.

    Ben
    Many thanks - I'll give this a go. how long should one leave the battery disconnected for?

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    plexer's Avatar
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    5 - 10 minutes, make sure the system battery is out and the psu lead.

    You can also try pressing the power button whilst they are all unplugged sometimes helps to discharge things.

    Ben

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    mjs_mjs (7th May 2011)

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    there are cds out there that will do it and if you remove the hard drive that may change the boot order enough to boot from cd/usb

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    mjs_mjs's Avatar
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    big thanks to all but solution was; to remove RTC battery for 8 mins.

    CMOS reset to defaults and i'm in - cheers guys.



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