Question about HP Pavilion dv4000 Notebook

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Locating CMOS battery in dv2000us

I am trying to reset the CMOS in a friends laptop, there children set a password in BIOS and nobody knows it.

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First try resetting using software, here's the software to reset or retrieve BIOS passwords.

On an HP laptop, the internal battery is located directly under thekeyboard, which is not removable on all models, so i don't suggesttrying if you are not comfortable.


Posted on Sep 27, 2009

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I have found the battery in the bottom under memory or under the hard drive or in some other little compartment.

Put the device on the kitchen table on top of a big piece of white paper THEN start taking out the itty ***** screws. They may be phillips or Torx. When you drop them, and you will!, the white paper will make them easy to find.

The batteries I have found in laptops are generally of the type with a plug with wires welded to the battery and they are usually in a slip of plastic.

Your experience may be different.

Now then ... lets go deeper. How is it the children got into the CMOS/BIOS to set that password? I often find it difficult to get into the CMOS/BIOS AND find the password setting!

Anyway, lets say they did that, you know how to solve it.

If the password was set in Windows and you are XP or Vista, resetting the BIOS willnot help, I'm afraid. You will probably have to reload Windows.

What ever happens, my friend, thanks for taking care of your buddy.

Let me know what happens

a

Posted on Sep 27, 2009

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You will have to get access to the motherboard to find the battery.... which basically means stripping the laptop completely.

If you don't feel comfortable doing this I suggest taking it in to a tech shop

Posted on Sep 27, 2009

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1 Answer

What is BIOS password?


No way to know YOUR bios password.
If you've neverassigned a BIOS password, press enter without inputting anything.
If you have a BIOS passwoed, you can reset BIOS rmoving CMOS battery



laptop cmos battery






Tutorial How to replace the CMOS battery in your laptop




How to Clear Your Computers CMOS to Reset BIOS Settings




How to clear an unknown BIOS or CMOS password

Apr 01, 2015 | Computers & Internet

1 Answer

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

1 Answer

Hannstar J MV-4 94V-0 0651"


If you know how to remove the CMOS battery on the motherboard of your laptop this will solve your problem. 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.
Removing the battery will reset the CMOS information/data including the password.
Of course after you have done this you have to re-enter the correct CMOS info in order for your laptop to function properly.


Good day.

Jun 23, 2011 | Computers & Internet

1 Answer

I'm having an Acer Aspire 5040, and I do not know the password for the bios, how do I reset the bios, I've opened the laptop and removed the battery, most did not work. You'd know this password, need...


To reset BIOS password, you must remove CMOS battery, not regular one. CMOS battery is located somewhere on the mainboard, so you have to open laptop.
OR
You can put out regular battery for few days, and it should reseted.
OR
You can try CmosPwd

May 03, 2011 | Computers & Internet

3 Answers

Somebody played up with my toshiba satellite Pro A200 and has set up a bios password which I'm having trouble accessing it. please I need a solution to bypass the bios password or even disable it would be...


Hello,

The BIOS password cannot be bypassed or disable. You need to know the password to reset it. If you don't know the password then you will need to physically reset it.

Here's a video on how to reset it.

WARNING:
If your not sure how to do it. Take it to the nearest computer repair center.

Mar 16, 2011 | Toshiba Satellite Pro A200-EZ2204X...

2 Answers

I dont remember the supervisor password now Im locked out of the bios on my laptop and it sucks.


Before attempting to bypass the BIOS password on a computer, please take a minute to contact the hardware manufacturer support staff directly and ask for their recommended methods of bypassing the BIOS security. In the event the manufacturer cannot (or will not) help you, there are a number of methods that can be used to bypass or reset the BIOS password yourself.

Try this first : 
manufacturer name : Toshiba 
password : Toshiba

Most Toshiba laptops and some desktop systems will bypass the BIOS password if the left shift key is held down during boot

Method 1 : Removing the CMOS Battery

The CMOS settings on most systems are buffered by a small battery that is attached to the motherboard. (It looks like a small watch battery). If you unplug the PC and remove the battery for 10-15 minutes, the CMOS may reset itself and the password should be blank. (Along with any other machine specific settings, so be sure you are familiar with manually reconfiguring the BIOS settings before you do this.) Some manufacturers backup the power to the CMOS chipset by using a capacitor, so if your first attempt fails, leave the battery out (with the system unplugged) for at least 24 hours. Some batteries are actually soldered onto the motherboard making this task more difficult. Unsoldering the battery incorrectly may damage your motherboard and other components, so please don't attempt this if you are inexperienced. Another option may be to remove the CMOS chip from the motherboard for a period of time.
Note: Removing the battery to reset the CMOS will not work for all PC's, and almost all of the newer laptops store their BIOS passwords in a manner which does not require continuous power, so removing the CMOS battery may not work at all.For eg: IBM Thinkpad laptops lock the hard drive as well as the BIOS when the supervisor password is set.

Method 2 : Using the Motherboard "Clear CMOS" Jumper or Dipswitch settings

Many motherboards feature a set of jumpers or dipswitches that will clear the CMOS and wipe all of the custom settings including BIOS passwords. The locations of these jumpers / dipswitches will vary depending on the motherboard manufacturer and ideally you should always refer to the motherboard or computer manufacturers documentation. If the documentation is unavailable, the jumpers/dipswitches can sometimes be found along the edge of the motherboard, next to the CMOS battery, or near the processor. Some manufacturers may label the jumper / dipswitch CLEAR - CLEAR CMOS - CLR - CLRPWD - PASSWD - PASSWORD - PWD. On laptop computers, the dipswitches are usually found under the keyboard or within a compartment at the bottom of the laptop.
Please remember to unplug your PC and use a grounding strip before reaching into your PC and touching the motherboard. Once you locate and rest the jumper switches, turn the computer on and check if the password has been cleared. If it has, turn the computer off and return the jumpers or dipswitches to its original position.

Method 3 : 
Jumping the Solder Beads on the CMOS

It is also possible to reset the CMOS by connecting or "jumping" specific solder beads on the chipset. There are too many chipsets to do a breakdown of which points to jump on individual chipsets, and the location of these solder beads can vary by manufacturer, so please check your computer and motherboard documentation for details. This technique is not recommended for the inexperienced and should be only be used as a "last ditch" effort.

Method 4 : 
Password cracking software

The following software can be used to either crack or reset the BIOS on many chipsets. If your PC is locked with a BIOS administrator password that will not allow access to the floppy drive, these utilities may not work. Also, since these utilities do not come from the manufacturer, use them cautiously and at your own risk.

Cmos password recovery tools 3.1
!BIOS
RemPass
KILLCMOS

Jan 15, 2010 | Toshiba Satellite A305D-S6835 Notebook

1 Answer

Friend gave me an old hp pavilion xz1185 laptop,but he dont recall password for cmos to get in,can i reset cmos?


This may not work but give it a try.
Remove the BIOS battery and the main battery from the laptop for 15+ minutes. Insert the batteries back into the laptop and the BIOS will return to the default setup, hopefully removing the BIOS password. You need to go into the BIOS configuration to set the Time and Date etc. again.

Nov 22, 2009 | HP Pavilion dv6000z Notebook

2 Answers

Toshiba tecra m4 bios password


Go to your friend. Download and burn this cd http://www.9down.com/Hiren-s-BootCD-9-8-Keyboard-Patch-73110/
Boot your pc from it by pressing F12 and use BIOS / CMOS Tools from it.

Feb 01, 2009 | Toshiba Tecra M4 Notebook

2 Answers

Reset bios password


You need to locate the Cmos battery, not the jumpers, this is not a desktop.

Locate the Cmos battery, disconnect the battery for ten seconds, and Bios will reset to factory default.

Jan 03, 2009 | HP Compaq nx6110 PC Laptop

1 Answer

Forgot power on password for IBM R60 thinkpad


Resetting the cmos has nothing to do with the Windows OS. It only helps you if your BIOS is password protected.

...and the whole idea of a password is, that nobody else can hack into your machine that easily, right?

Anyways - there are ways to reset a password: google is your best friend in this case. And you will need access to a CD burner, since you have to boot your laptop from the downloaded "Rescue-CD".

Dec 11, 2008 | IBM ThinkPad R60 Notebook

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