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CMOS Password

Mayban36Mayban36
edited June 2016 in Hardware
Hello!

I've just bought a cheap Compaq lte 5280 through Ebay, it has some problems but the one is blowing my mind is that the computer has a CMOS password(I can install a OS,or whatever but i cannot change anything at bios), so i cannot change the language(its in italian..), date, anything. I tried removing the main battery and the small one on the back for 30 min-1 hour and it still needs the password, Anyone with a computer like this know how to bypass the cmos password? if there is a way to do it through some software it'll be better because i dont want to disassemble it and break something or whatever. Thank you.

Comments

  • calvinbcalvinb
    Usually, removing the CMOS battery (inside the computer, but some laptops might hide it behind a flap) will reset the BIOS settings. Keep in mind that on computers of this age, you might need to know your disk geometry, and for Compaqs of that age, they might need a floppy containing the BIOS setup program.
  • Mayban36Mayban36
    The battery i removed is something like this:
    http://ecx.images-amazon.com/images/I/4 ... AA960_.jpg
    I dont know if that is the cmos battery.
  • IconIcon
    I have the LTE 5300 model, which is just a step above yours. Did you remove the NiMH battery that is located on the underside of the laptop? If you did, try powering it up without either battery installed to fully discharge the system.

    If you're still have trouble clearing the CMOS password, have a look in the service manual linked below.

    http://www.elhvb.com/mobokive/edwin/lap ... 205000.pdf
  • Mayban36Mayban36
    Icon wrote:
    I have the LTE 5300 model, which is just a step above yours. Did you remove the NiMH battery that is located on the underside of the laptop? If you did, try powering it up without either battery installed to fully discharge the system.

    If you're still have trouble clearing the CMOS password, have a look in the service manual linked below.

    http://www.elhvb.com/mobokive/edwin/lap ... 205000.pdf

    Yes i removed it, the battery of the laptop is absolutely dead, i removed the main battery and that NiMH battery and tried to power up the computer a few times without any power to discharge everything, waited more than an hour to put back together and it still has de CMOS password, that software called KillCMOS or something like that would work on this compaq?
  • IconIcon
    Mayban36 wrote:
    Icon wrote:
    I have the LTE 5300 model, which is just a step above yours. Did you remove the NiMH battery that is located on the underside of the laptop? If you did, try powering it up without either battery installed to fully discharge the system.

    If you're still have trouble clearing the CMOS password, have a look in the service manual linked below.

    http://www.elhvb.com/mobokive/edwin/lap ... 205000.pdf

    Yes i removed it, the battery of the laptop is absolutely dead, i removed the main battery and that NiMH battery and tried to power up the computer a few times without any power to discharge everything, waited more than an hour to put back together and it still has de CMOS password, that software called KillCMOS or something like that would work on this compaq?

    No, there's a jumper on the topside of the motherboard that will clear the passwords. Click on this link: http://www.elhvb.com/mobokive/edwin/lap ... 205000.pdf

    Go to the bottom of page 41, where it reads:
    The power-on password prevents use of the computer until the password is entered. The setup password prevents unauthorized changes to Computer Setup. To clear the passwords, you must remove and replace a jumper on the system board. If you do not know the passwords, use the following procedure to clear the password:

    Follow the instructions. It should give you a step-by-step procedure on how to access the jumper. If you're uncertain how to disassemble the unit, I can disassemble mine and take photos to show you the steps.
  • Mayban36Mayban36
    Icon wrote:

    No, there's a jumper on the topside of the motherboard that will clear the passwords. Click on this link: http://www.elhvb.com/mobokive/edwin/lap ... 205000.pdf

    Go to the bottom of page 41, where it reads:
    The power-on password prevents use of the computer until the password is entered. The setup password prevents unauthorized changes to Computer Setup. To clear the passwords, you must remove and replace a jumper on the system board. If you do not know the passwords, use the following procedure to clear the password:

    Follow the instructions. It should give you a step-by-step procedure on how to access the jumper. If you're uncertain how to disassemble the unit, I can disassemble mine and take photos to show you the steps.

    CMOS pwd bypassed. Thank you so much!
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