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How can i reset the cmos password of hp dv2120us i forgot the password to access the systems bios. Thanks!

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  • eduven2ra Sep 12, 2008

    It's a laptop HP Pavilion dv2120us model that i have problem with the CMOS

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The only way that you can reset a CMOS password is to remove the CMOS battery on the mother board, or toggle a jumper switch (instruction usually comes with the user manual, please check). If you can do either, then password should be reset.

Posted on Sep 12, 2008

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Unable to log in


Which operating system ?
The Compaq Presario CMOS password is an administrative security measure built into the firmware of a Compaq computer.

This password is stored in the motherboard's BIOS (Basic Input Output System) and provides for hardware-level security.

This password may be accidentally set or forgotten over time and must be reset in order to boot the computing system.

Disconnect the Compaq computer from any electrical sources and remove the side access panel from its case.

This may require the removal of one or more thumbscrews on the rear of the computer case.


WARNING: Before you start troubleshooting remember that you are dealing with electricity that can KILL. http://www.kitchentablecomputers.com/static.php - rules

Locate the CMOS battery.

This battery is a round button-type battery located in the bottom-right corner of the Compaq Presario motherboard.

Grip the battery by its edges and pull it straight away from the motherboard to remove it.


Press and hold the power button on the case for ten seconds to remove any remaining electrical current from the computer.

This removes the CMOS settings and returns it to the default state of having no password set.

Replace the CMOS battery.


Replace the computer's side access panel and re-establish any previously severed electrical connections.
http://www.youtube.com/watch?v=zjGHpJqVJkM
Replace a CMOS battery inside a desktop computer

http://www.dewassoc.com/support/bios/bios_password.htm

http://www.tips4pc.com/articles/Computer Troubleshooting/Remove the CMOS battery to reset the bios password.htm

Jan 14, 2014 | HP Compaq Presario SR5450F (KJ383AA) PC...

1 Answer

I forgot my Bios password in the function F2 screen and unable to change the time and date in BIOS


You would have to reset BIOS. This can be done by opening the case (while the computer is powered down and unplugged) to access the CMOS battery on the motherboard, removing it, wait for a few seconds and reinsert it to clear CMOS. This will reset BIOS to there default settings and clear the BIOS password. You will have to reconfigure BIOS, so I would suggest finding a technician to do this for you if you are not comfortable with handling internal computer components or configuring BIOS.

Nov 08, 2013 | Dell Dimension B110 PC Desktop

1 Answer

I forgot the bios password


You'll have to open up your computer and reset the CMOS battery which will clear the BIOS password. To reset the CMOS, locate the battery and remove it. Then using a pair a tweezers to create a short where the battery was. Place the battery back in and your BIOS should be reset.

Oct 19, 2012 | HP Pavilion Slimline s3700f PC Desktop

2 Answers

How do I reset the bios? I forget the password to access it.


You will have to gain access to the Motherboard. On it, there will be a round cell battery about the size of a quarter. Pull that for about 15 minutes. Also, when it is pulled, fire up the system. It will beep and state that CMOS is different. OK it and shut the machine back down and put the battery back in. Fire up your PC once more, and ok the time changes. This should take care of resetting BIOS and CMOS

Jun 20, 2011 | HP Pavilion a622n (PC108A) PC Desktop

2 Answers

Cannot access system -- forgot password. Cannot


Open the computer case. On the motherboard, (looking from the bottom of the motherboard), in the bottom right quadrant, to the right of the CMOS battery, you'll see two jumpers labeled CLR_CMOS and PSWD. You'll want to move the jumper for the PSWD block to pins 2-3 for 5 seconds and then replace the jumper on pins 1-2. This will clear the CMOS password.

Feb 07, 2010 | Dell Inspiron 530s Desktop Computer

2 Answers

Pc "bios"problem


this looks like you have kept the bios password and you forgot it. just do one thing open the cpu case to access the inside of the system and then just remove the battery in it. wait for 5 min and again plug in the battery. thats it your bios memory password will be reset.
2nd solution without removing battery. just reset the bios as shorting the jumper pins. consult your motherboard book to know where to find the bios reset. it will be written as CLEAR CMOS.

Dec 21, 2009 | Intel PC Desktops

3 Answers

I forgot the power on password


Is this a BIOS password? In other words, are you asked for a password immediately upon turning on the computer? If yes, then it depends on the make/model of the laptop whether you can fix this yourself. In any case, you would need to call Compaq tech support.

Nov 21, 2009 | HP Compaq dc5100 PC Desktop

3 Answers

Don't reset password BIOS HP DC7100


If you cannot access the machine after if has been powered up, it is still possible to get past the BIOS password. The BIOS password is stored in CMOS memory that is maintained while the PC is powered off by a small battery, which is attached to the motherboard.

Open the CPU casing locate the CMOS battery in motherboard and remove this battery, all CMOS information (including the BIOS password) will be lost. You will need to re-enter the correct CMOS setup information to use the machine. The machines owner or user will most likely be alarmed when it is discovered that the BIOS password has been deleted.

On some motherboards, the battery is soldered to the motherboard, making it difficult to remove. If this is the case, you have another alternative. Somewhere on the motherboard you should find a jumper that will clear the BIOS password. If you have the motherboard documentation, you will know where that jumper is. If not, the jumper may be labeled on the motherboard. If you are not fortunate enough for either of these to be the case, you may be able to guess which jumper is the correct jumper.

This jumper is usually standing alone near the battery. If you cannot locate this jumper, you might short both of the points where the battery connects to the motherboard.

If all else fails, you may have to clear the BIOS password by resetting the RTC (Real Time Clock) IC (Integrated Circuit) on your motherboard.
Many RTC's require an external battery. If your RTC is one of this type, you can clear the BIOS password just by unsocketing the RTC and reseating it. Good luck!

Oct 04, 2009 | PC Desktops

3 Answers

How do i bypass the primary drive lock password


On the mainboard near the coin battery you'll find a jumper. take it off and reboot. Replace it and reboot again. that works sometimes. If not you can go to the motherboards' BIOS like Phoenix and they have backdoors built in. Read on:
Backdoor passwords Many BIOS manufacturers have provided backdoor passwords that can be used to access the BIOS setup in the event you have lost your password. These passwords are case sensitive, so you may wish to try a variety of combinations. Keep in mind that the key associated to "_" in the US keyboard corresponds to "?" in some European keyboards. Laptops typically have better BIOS security than desktop systems, and we are not aware of any backdoor passwords that will work with name brand laptops.
WARNING: Some BIOS configurations will lock you out of the system completely if you type in an incorrect password more than 3 times. Read your manufacturers documentation for the BIOS setting before you begin typing in passwords
Award BIOS backdoor passwords:
[TABLE]
AMI BIOS backdoor passwords:
[TABLE]
PHOENIX BIOS backdoor passwords:
phoenix, PHOENIX, CMOS, BIOS
MISC. COMMON PASSWORDS
[TABLE]

Good luck...hope this helps...

Apr 22, 2009 | PC Desktops

1 Answer

Forgot my password for my Presario SR122NX


if u forget BIOS password so first remove power cable and moniter cable and than remove cmos battery on motherboard for 2-3 min. after that put cmos battery back in same possition and start ur pc...and set bios time and date..

If U forget windows password so pls tell me which windows u use...
than only i will give right ans of ur qus.

if work RATE me if not reply me
thanks
bye

Mar 20, 2009 | HP Compaq Presario SR1222NX (PN234AA) PC...

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