Reset the BIOS / Supervisor Password on Acer Aspire One AO722

Question from reader M.H.:

Hi J.D.,

Thank you so much for those great step-by-step memory upgrade instructions. As you obviously know much more about the AO722 than I do, I was wondering if I could pick your brain on something. As I’ve forgotten my computer’s BIOS supervisor password, would you be able to let me know how to clear it or otherwise get into my BIOS? (that is, other than sending the netbook back to Acer and paying them over $100 to do it). The ever-helpful Jaroc has mentioned a procedure to clear the BIOS, but I read online that someone said that the Aspire One’s BIOS password is probably stored in an EEPROM — whatever that is — and not in the CMOS itself. Would you know if this is correct or not? And so will shorting/ clearing the CMOS eliminate the BIOS password, and if not, is there a way to short / clear the EEPROM ? Other than this, someone online mentioned a way to do “BIOS Recovery” for the AO722:

But do you know whether this procedure would merely flash a newer version of the BIOS, or would it also clear the BIOS password?

Alternatively, someone online mentioned there is a program that allows one to read all the digits and text stored in the CMOS, thus helping to remind one of the password stored somewhere therein, but I’m sure that will work for the AO722; would you know?

Sorry to impose like this, but your depth and breadth of knowledge about the AO722 make it hard to resist asking you :) Many thanks in advance!



Hi M.H.,
Thank you for your comment and for your good question(s).

I am sorry that I do not have a definitive answer for you. However, I do know of a few things you may want to try:

#1 Deduce what the password may be
(according to that post, the password may be converted to ALL CAPS and it may also be truncated to 8 characters… so if you had set the password to mhpw2012zzz then the Acer BIOS might have changed it to MHPW2012)
So if you set the password yourself and thought you remembered it, but it didn’t work… then this might be helpful :-)

#2 Attempt the BIOS Recovery Route
Here is the nice URL that you mentioned:

Aspire One AO722 BIOS Recovery

Aspire One AO722 BIOS Recovery      04-12-2012, 05:17 AM I searched and searched and couldn’t find this anywhere and finally figured it out so I thought I’d post it somewhere for…

and here is some general information on flashing the BIOS on an Acer Aspire One:

Acer Aspire One BIOS password recovery - Remove AA1 bios pass reset

Acer Aspire One BIOS password recovery – Remove AA1 bios pass reset few days ago a client called and asked if we can reset or remove bios passwords. He wanted to set a bios password on his Acer Aspire One so nobody could access it without…

My best guess is that this would remove the BIOS supervisor password, but I do not know for sure. The good thing is that is should not hurt anything and it may well work!

NOTE, here are a few more resources on BIOS recovery/flashing for a couple Acer Aspire One models:

Acer Support – Answers, E-Mail, Chat – How do I update the BIOS on the Acer Aspire One AOA110 or AOA150 netbooks? the BIOS will require a USB flash drive to store the BIOS information on during the update. To perform the update to the BIOS: In your Internet browser of choice,…

Please keep us posted on your progress and please let me know if there is anything else I can help with :-) I am sorry that I did not have a more definitive answer! :-(

Best regards,

PS Here is perhaps the most detailed and useful response I’ve found on the topic! It purports to show a way to clear the password:
I hope this helps and please keep us posted! :-)


  • f

    btw the bios was just upgraded (11/13/12) take a look at the acer site, the new one is 1.11.

  • Stefan Sticht

    Unforunately I set the supervisor password on my ancient AAO150. The password got changed:

    * password got truncated to 8 chars
    * all letters changed to upper case
    * special characters (e.g. !) got removed

    Fortunately I could guess the changed password with the ideas on this page.

    • Hi Stefan,
      Thank you for sharing your experience. I am very glad you were able to deduce the password 🙂

      Enjoy your Acer Aspire One AA0150 and have a GREAT week!

      Best regards,

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