Question about HP Compaq 6720s Notebook

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Remove cmos battery but the power on password

Removed cmos battery but the power on password would not deactivate

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If waiting 10-15 min doesnt do it then leave it out for a couple of hours because some compasitors take time to discharge.iv seen some of them take 24 hours before.

Posted on May 20, 2009

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Remove cmos battery and wait about 10-15 min. That should help. Remove also power cord and battery

Posted on Apr 14, 2009

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I want to that how i reset my recovery password and where the actual location of CMOS Battery?


In computing, BIOS (basic input output settings) refers to the information stored regarding a computer's hardware configuration, the system date and time and any applied password. This information is known as the BIOS or CMOS settings--the BIOS is stored on a small battery-powered semiconductor chip known as the CMOS (complementary metal oxide semiconductor). Having a CMOS or BIOS password restricts unauthorized changes to the system's hardware configuration and, in some computers, may even be required for booting. A lost password may be reset by removing the CMOS battery, clearing the motherboard jumper or using a software-based password cracker.

Removing CMOS Battery
1. Shut down the laptop and unplug its power cord from the wall outlet. Remove the battery cover under the laptop and gently raise the battery from its dock. Unplug any peripheral devices with a live power source connected to the laptop, such as a modem or printer.

2. Locate and remove the CMOS battery. Refer to your user manual or visit the manufacturer's website for your laptop's architecture. Follow manufacturer recommended procedure to access and remove the CMOS battery. Depending on make and model, this procedure may be more involved for some laptops and not others. The CMOS battery is a flat circular shape and resembles a watch battery.

3. Wait 30 minutes and then put the battery back in. This will erase all information stored in BIOS. Assemble the laptop, making sure you leave no loose connections. Power up the laptop and press "F1" when you get the "CMOS cheksum error" message. Type in a new password.

Clearing CMOS Jumper
1.Turn off the laptop and access the motherboard following recommended procedures.
2.Locate the jumper in the motherboard. If you do not have your motherboard documentation, locate a single jumper near the CMOS battery. In some laptops, the jumper may also be labeled in the motherboard. Put the jumper setting to "Clear" and reassemble the laptop.
3.Turn on the computer and hit "F1" when the "CMOS checksum error" message is displayed. Navigate through the BIOS settings interface to load default settings and apply a new password.

Using Password Remover
1.Download a software-based BIOS password cracker. There are numerous free programs able to recover or delete CMOS or BIOS passwords from virtually all motherboard brands. Download the file from a trusted source and save it to the desktop.
2.Burn the installed file to a CD using image burner software. Insert the CD and access the password remover tool.
3.Note the password or use the program to set a new password.

I hope you find it very helpful. Thank you for using fixya.

Aug 15, 2011 | IBM Lenovo IdeaPad Y560 Notebook

3 Answers

Remove administrator Password.BIOS password


Hi

This is really, really strange but the BIOS password can be removed only by a local ASP. The technician will remove it and will update the BIOS to prevent such further, unexplained password settings.

Greets

Feb 11, 2010 | Dell Vostro 1500 Notebook

1 Answer

I have a satellite A105 and When i turn it on it asks for password but I don't have the password. So how to I get past this to be able to use it again?


just remove the cmos battery

the bios stores the password and the cmos battery provides it power to store it

if you remove cmos battery the bios reverts to factory settings and the password is removed

cmos battery is different than the laptop backup battery

cmos battery is found inside the laptop case on the motherboard, you will have to open the laptop to remove the cmos battery



Sep 29, 2009 | Toshiba Satellite A105 Notebook

2 Answers

How to remove cmos/bios password ?


A. By Using the Motherboard Jumper:
In most motherboards CMOS battery is soldered, which makes it difficult to remove the battery. In this case we use another method.
Almost all motherboards contain a jumper that can clear all CMOS settings along with the BIOS password. The location of this jumper varies depending upon the motherboard brand. You should read your motherboard manual to check its location. If you don't have the manual then look for the jumpers near the CMOS battery. Most of the manufacturer label the jumper as CLR, CLEAR, CLEAR CMOS, etc.
When you find the jumper, look carefully. There will be 3 pins and the jumper will be joining the center pin to either left or right pin. What you need to do, is remove the jumper and join the center pin to the opposite pin. e.g. if the jumper joins center pin to left pin, then remove it and join center pin to right pin. Now wait for a few seconds and then again remove the jumper and join the center pin to left pin.
Make sure to turn the PC off before opening the cabinet and resetting the jumper.

B. By Using Software:

I have found that BIOS/CMOS Password Recovery Tool is the most effective.:
BIOS/CMOS Password Recovery Tool is a program that works instantly to remove any lost or forgotten BIOS/CMOS password. Simply boot your PC to DOS and execute the program, and get access to forgotten BIOS/CMOS passwords in just seconds
BIOS/CMOS Password Recovery Tool Service: http://www.biospasswordrecovery.com/

Aug 23, 2009 | HP (350030-001) for Compaq dc7100...

2 Answers

Hp530 power on password prblem


The reason why your password is still re-curring after removing the CMOS battery is because when you were doing so, some of the cables supplying power to the Board were still plugged.
So before using the CMOS removing method, first make sure that you have disconnected ALL source of power supply cable from the Board, then remove the CMOS Battery for a few seconds, and re-insert it. It should work like that.

Jul 09, 2009 | HP 530 Notebook PC

2 Answers

How can i reset CMOS/BIOS password for HP compaq tc4400 laptop i have hp 500 notebook and i forget cmos/bios password . i remove cmos battery . but dont solve it . how can i solve it


how can i reset CMOS/BIOS password for HP compaq tc4400 laptop i have hp 500 notebook and i forget cmos/bios password . i remove cmos battery . but dont solve it . how can i solve it

May 04, 2009 | HP OmniBook 500 Notebook

1 Answer

Password bloked in my laptop


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.

Apr 05, 2009 | Acer Computers & Internet

1 Answer

Removing BIOS Password


If you remove the battery and put it back in than there well be no password. By doing this you are removing the password information from the CMOS. settings.
Here is a link on how to take out the battery on you desktop computer. Just remember to replace it!!!

http://www.ehow.com/how_8159_change-battery-computer.html

Jan 02, 2009 | Dell OptiPlex GX150 PC Desktop

3 Answers

Bypassing password


short out the jumper pins labeled CMOS

Jul 09, 2008 | Fujitsu Siemens Celsius R610 PC Desktop

7 Answers

How to reset power-on password.


The only way is to clear the cmos settings. However, there is a special way to do it. First you have to take out the battery and the power adaptor from the laptop. Then you need to open the laptop and look on the main board for the cmos battery. Take it out for a few minutes, maybe 5 - 10 minutes. Then plug in the power adaptor without the cmos battery nor the laptop battery and boot the computer. It will ask you to hit F1 to either load default values or to save settings. Do that. Then shut down the computer. Make sure settings is saved though. Put in back the cmos battery and the laptop battery. When you reboot, it should boot up with no password.

May 02, 2007 | HP Compaq Business NX9110 Notebook

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