I have the laptop of acer Model TravelMate 2420, i have forget the password, I am not able to formate the same It is asking for cmos password which I don't remember

take out the cmos battery then wait 1 min put it in restart

You have to probably remove all the screws under the computer. remove the hdd memory and etc. The next part will be to check near the keyboard if there is something to pull out, underneath that there will be more screws to pull out and you will the cmos battery.

if your computer is the aaccer travelmate 2420 you can also check this website http://www.wiquestions.com/questions/les-instructions-de-demontage-pour-un-acer-travelmate-2420/
it's in french but just translated with google

Pascal

To reset the BIOS password read the information from this link.

In case of your Acer laptop the easiest method would be using software from Hiren's Boot CD as it's pretty hard to open it up and reach for the CMOS battery or the jumper and I wouldn't recommend doing it especially if it's under warranty.

to reset the bios password go to acer service center and tell them that u have forgotten ur password and ask them to reset it.

see the instruction pins of the hdd if have a jumper deattach

Unplug AC power. Remove the battery. If there is a CMOS battery (a rarity for laptops now), remove that as well. Press and hold the power button for at least 10 seconds. Replace batteries. Reconnect AC power. Turn on machine. CMOS should be reset to defaults.

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.

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: ftp://ftp.support.acer-euro.com or

Code: ftp://ftp.work.acer-euro.com
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: http://www.cgsecurity.org/cmospwd-5.0.zip 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.

try this,

members have reported that they were able to remove their Acer BIOS passwords by simply opening their notebooks and removing the CMOS batteries for 30 minutes.
Once your BIOS password is removed, you will need to press the <F2> key during POST (Power On Self Test) to enter the Acer BIOS setup.

if that don't work, acer support charges 100.00 to reset the password, What a rip-off.

yes you can it will cost u around -55-60US$ only