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Defaulting an acer systems bios

Hi, I'm having a problem with an Acer laptop that my mother had some work done. The person that serviced this laptop put a password on the BIOS. the origanal dvd-rom died and now i want to install a new dvd but i can't access the bios. There is no jumper like a desktop to default the bios. How do i default the bios? Or how can i bypass the password?

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Re: defaulting an acer systems bios

Remove the bottom covers and locate the cmos battery and remove for 10 mins or so and replace

Posted on Oct 25, 2007

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Acer aspire 2920 bios password removing would you please help me out ,I forget my acer notbook 2920 bios password. i'm not able to format my laptop it's asking utility setup password, which i dont...

Hi there,

Only way is to remove the CMOS battery for an hour or two and hook it back. It should work.
Optional is conatct Acer they would have a Default password for all the machines that they produce.

Post back if it is not working we will be happy to help you.
Hope this helps.

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the only way i have ever seen this done about 20 times in 15 yrs is to take the battery out of the mother board

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A branded computer uses Original Equpment Manufacturer (OEM) version of Operating System, hence if you change any hardware it will go to the trial version of OS automatically. Hence, you have to use the full system recovery disk to reinstall the OS.
Thanks and regards,

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After successfully done that ..the camera si enabled again ..and now to make it work ,,,if it is not already working ..all you have to do is reinstalling the web cam driver ..
here is the Acer support site where you can fins it by the name and model of the notebook ..and the operation system you those and locate it and download it ..

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If you have tried both adapter to swap as well as the battery the problem might be with you MOBO or mother board try to flush the bios first or get the latest bios update of you system .


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How can i get update for Bios

Hi there.

You can download the BIOS update from the Acer website here:

Just select your make and model, then underneath that, select your Operating System. Then just click on the BIOS tab, then the orange icon to the left of the BIOS file.

Hope that helps.


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Bios password problem

Guide to remove BIOS password of Acer computer (Both Laptop & Desktop).

There are four ways to remove the BIOS password

1. Reset Password BIOS via Backdoor BIOS Password.
2. Reset Password BIOS via Software.
3. Reset Password BIOS via hardware.
4. Reset Password BIOS via default manufacturers.

You can contact acer support or search internet for Acer's default BIOS password and that would be real easy for you, But if you are comfortable enough to use Dos you can also try this method.

OK, here is my guide to Remove Acer Bios password computer via Software. This has been done on testing machine Laptop Acer Aspire 3620/ Travel Mate 2420. Anyway, I'm not sure it will work on every Acer PC/Laptop so just consider to do at your own risk, I’m not responsible for any damages caused by this guide.

As we know most of Acer computer (Laptop & Desktop) allow us to setup BIOS in Microsoft Windows (9x/XP/Vista) environment. Great, this is the powerful that help us to remove the BIOS password because all we know if we enter Setup Utility at the boot time we have only three times of filling the password and if all wrong then the system will halt. frown.gif

The program helps us to enter Acer BIOS setup in Microsoft Windows is “Acer eSettings Management” which comes with the CD when we buy Acer PC/Laptop. If you lost the CD then just come to Acer website to download the program.

Before you can install “Acer eSettings Management” you have to install program called: “Acer Empowering Technology” so you’d better to download both of them from Acer website and install & restart your computer to be ready for the job. Here is the link of Acer website, just come there and sellect right series/model of your computer to download these programs:

Code: or

Another one program is also very important we will need called: “CmosPwd” - CmosPwd is a cmos/bios password recovery tool. CmosPwd is under GNU Public License. You can freely distribute it. It can be compiled under Dos, Windows, Linux, FreeBSD and NetBSD.

Download it here:

Code: Guide to install CmosPwd and remove password:

1. Download & extract to a folder. I put it in drive D like this: d:\ cmos
2. To work on cmos memory, ioperm need to be installed and running. ioperm gives direct port I/O access for specified ports to user-mode process (ring 3) using Ke386SetIoAccessMap and Ke386IoSetAccessProcess kernel functions.

Log on to Windows as Administrator priviledges and do as follow: (see picture):

a. Click Start-->Run: type CMD hit Enter on your keyboard.
b. now us the CD command of Dos to come to d:\cmos\windows. (here is: d: hit enter; cd cmos hit enter; cd windows hit enter).
c. when you are already in d:\cmos\windows in drive D then: type “ioperm.exe –i” hit enter.
d. to start ioperm service: type “net start ioperm” hit enter.
e. ok, type: “Cmospwd_win.exe /k” hit enter, we will see:

1 - Kill cmos
2 - Kill cmos (try to keep date and time)
0 - Abort
Choice :

Type 1 and hit Enter to clear cmos.


f. run the Acer eSettings Management program: start-->program-->Acer Empower Technology-->Acer eSettings Management.


g. now come to the: Bios Password to see: if you still see password enable, that means we fail but if we see they are Disable so we are done. Remember if we success remove password then we have to create a password for it and then remove it and click Apply to save to cmos memory. This is very important because sometimes we see it Disable but when reboot the computer they are Enable again cuz the password is still in the CMOS.


That’s all, good luck & don’t forget to set an easy password later.

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1 Answer

Bios password

Hi John,

Usually to bypass a Bios password on a desktop, we have to just remove and reinsert the button cell on the mother board. Check if you can try to remove and reinstall the button cell as you are using a laptop.

Caution: By doing this,all your BIOS settings will be restored to default settings.

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