Question about Compaq Evo D500 PC Desktop

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Reset BIOS password

I have a compaq evo d320, the previous owner had set a password on the BIOS/utility set up, I can login into it by just pushing enter 3 times on at password stage then utility loads, but I can't change anything in it, as if I'm locked out of changing any thing.

I tried a method of removing battery, it did kinda look like it had reset but then password page came up again upon entering utilties, plus it also said that the CMOS was invalid.

What else can I do to resolve this issue and thanks in advance.

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  • 3 more comments 
  • Patrick De Thierry
    Patrick De Thierry Nov 17, 2008

    I can't see a small bit of coloured plastic near the battery, I can't seem to see no switch I could switch at all. I tried the battery trick again but to no avail. Hmmm...if I could find this jumper switch then maybe I could get somewhere.

  • Patrick De Thierry
    Patrick De Thierry Nov 18, 2008

    Hey leecom72

    Yeah I have found the jumpers, tried moving it over for 10 seconds then moved it back, I restarted my computer, then I see the ram load then it loads all this stuff then restarts, it does that 3 times before loading windows again, when I try to intefer and press F10 to go into bios, it lets me in, but still cant change anything, and when it does load the windows everything is blank except for the wall paper, there is have nothing else showing. So i did jumper again, let it restart 3 times and load windows then all my stuff for windows is all back.

    Don't know what else I can do.


  • Patrick De Thierry
    Patrick De Thierry Nov 18, 2008

    Yeah it does ask for password

  • Patrick De Thierry
    Patrick De Thierry Nov 18, 2008

    No a eve d320

  • Tim Brock May 11, 2010

    try resetting the jumper settings. you have to open it up to do it, its somewhere on the motherboard.

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  • Compaq Master
  • 4,806 Answers

Ok, this time try to reset the bios using the jumper (small bit of coloured plastic near the battery) move the position of the jumper and hit the on/off button, the computer should not start if you have done this right, move the jumper back to its position and start the pc, go straight back into the bios and set the date and time, hit F10 and ok or yes and you should have full control of the bios.
if there is no jumper, remove the battery again for 10 mins and make sure the power cord is removed from the back, hit the on/off button a few times to drain any residual power, after 10 mins replace the battery and do what i told you to with the bios

good luck

Posted on Nov 17, 2008

  • 4 more comments 
  • Lee Hodgson
    Lee Hodgson Nov 17, 2008

    if there are two metal prongs near the battery housing then thats the cmos reset, you can short this by usind a flat head screwdriver to bridge them and press power on, if there are no prongs, remove all power from the PC and remove the battery again for 10 mins, put it back after that time, when the computer restarts it will say "cmos invalid, press F1 to continue or Esc or Del to enter settings", you need to go into the settings to set the time and date, all passwords should be cleared

    good luck and kind regards


  • Lee Hodgson
    Lee Hodgson Nov 18, 2008

    Does the bios still ask you for a password to chane the settings?


  • Lee Hodgson
    Lee Hodgson Nov 18, 2008

    ok give a little time on this, the cmos should have reset when you took the battery out and cleared the cmos with the jumper, power had been removed from back! and left for 10 mins minus the battery, i will check to see if the bios chip has onboard memory and see what i can do about this.



  • Lee Hodgson
    Lee Hodgson Nov 18, 2008

    is the pc a EVO D500? just to verify because i think i may have a soloution for you :)

  • Lee Hodgson
    Lee Hodgson Nov 18, 2008

    Since HP provides no useful documentation for the
    D320 I do not know if the CMOS reset is a button or jumper. I will
    assume that it is a button.

    There should be a a small white button in a yellow
    circle next to the IDE connectors. Please press and hold this for 15
    seconds. This will help you reset cmos but this is a manual operation.
    Disconnect the power cord (again) then press the Clear CMOS
    button for 10 seconds. If it is a jumper move the jumper from the two
    pins it is on to the other position for 10 seconds and then put the
    jumper back on the original pins like i explained before.

    Keep me informed please

    Hope this helps.



  • Lee Hodgson
    Lee Hodgson Nov 18, 2008

    Try this password if all this still fails: "Compaq"

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