Question about HP Elitebook 8530w Notebook

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I need to remove and then replace the cmos battery in order to reset the bios. I've located it but I'm not sure how to remove it. How do I go about?

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  • 72 Answers

Hi

To Remove the CMOS battery:

1. Position the computer upside-down with the front toward you.

2. Loosen the two Phillips PM2.0×5.0 captive screws (1) that secure the memory module compartment cover to the computer.

3. Lift the right side of the cover (2), swing it up and to the left, and remove the cover. The memory module compartment cover is included in the Plastics Kit, spare part number 495076-001.

I need to remove and then replace the cmos battery - e72437a.jpg

4. Disconnect the RTC battery cable (1) from the system board.

5. Slide the RTC battery (2) out of the rubber pouch on the bottom of the system board.

afe6ba0.jpg
Reverse this procedure to install the RTC battery.

Posted on Jul 10, 2010

  • Xavier Dsouza Jul 10, 2010

    Hey I forgot to mention



    Before removing the CMOS battery, follow these steps:



    1.
    Shut down the computer. If you are unsure whether the computer is off or in Hibernation, turn the computer on, and then shut it down through the operating system.



    2.
    Disconnect all external devices connected to the computer.



    3.
    Disconnect the power from the computer by first unplugging the power cord from the AC outlet and then unplugging the AC adapter from the computer.



    4.
    Remove the battery

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  • 93 Answers

There is also usually a "jumper" that you can do this with. You would have to look up your make and model on the manufacturers site.
The cmos batter just flicks out. It's held in by a med loose spring. Once out leave it for 5 mins for replacing it.

Posted on Jul 10, 2010

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Posted on Jan 02, 2017

drlalitv
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SOURCE: removed my CMOS battery, but the BIOS settings won't disable

There are 2 ways you can reset your bios. 
1. On the motherboard there is a small watch battery. Remove this battery along with the power cable from the power supply. Hold down the power button to fully discharge the system. Wait 2-3 minutes then reinstall the battery and plug in your system. Your reset is now complete 

2. Some motherboards have a 3 pin jumper by the battery. Lets say that the jumper is on pins 2 and 3. Remove the jumper while the machine is OFF and place onto pins 1 and 2. Power on your machine for a minute. (Note: Your system will not POST). Shutdown your machine and put the jumper back to pins 2 and
3. Your reset is now complete
There might also be an option within the BIOS to "Load Defaults" if that is all you are looking to do
please see this http://www.11a.nu/software/bios-pc-bios-security-and-maintanance-toolkit/
hope it helps!

Posted on Nov 04, 2008

parrotheadpc
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SOURCE: How do I remove the mainboard battery on a Toshiba

I know this not exactly what you are looking for but its all Ive found so far....it is a tear down guide for the NB but it is in Italian...lol It has good pictures as a guide though. I'll keep looking.

http://netbookitalia.it/toshiba-nb100-guida-al-disassemblaggio.html

Posted on Sep 10, 2009

parrotheadpc
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SOURCE: acer 5610z need to locate cmos battery for bios password reset

If you have forgotten your BIOS or system password, there are no software tricks or magical gimmicks that will get the password cleared. Laptops are different in that they are designed to not work with “backdoors” etc. for security reasons. There is one true way that works most of the time and that is hardware.
The Cmos (RTC) battery that is mounted on the motherboard in most cases holds the key, if your motherboard has the battery that is connected to the motherboard by using a two wire socket that plugs into the MOBO, then here is the procedure.
On the motherboard where the battery plugs into, you will see two pins sticking straight up, these engage the plug on the battery side. These two pins have to be “shorted” and then the motherboard powered up for approx. 30 seconds, then power down the system and replace the Cmos battery and reboot. Your password problem should be cleared up. The best way to “short” the pins is get another cmos battery and cut the wires from the battery part, bare the ends and twist together, this will short the pins. Make sure you tape the connection good on the jumper you just made….don’t want to touch anything else with powered up bare wires. Below is the link to your service manual that will point everything out to you. Good luck.

http://tim.id.au/laptops/acer/aspire%205610%20travelmate%204200.pdf

Posted on Sep 24, 2009

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1 Answer

Bio's Password reset for gateway 98 desktop


BIOS passwords can be reset or removed in two ways:

1. using software 2. using hardware.

1. Software removal method - Here are two software apps to reset or retrieve BIOS passwords.

!BIOS - is a PC BIOS toolkit offering password removal/decrypt and BIOS settings modification/backup/restore.
You can download it here:
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CmosPwd - Cmos password recovery tools
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You will need to create a bootable Dos, or Linux or NT cd in order to run them.


2. Hardware Removal method :
- First you need to open the case.
- Then find the cmos battery (It will look like a nickel sized silver disk located on the motherboard).
- Remove the cmos battery for 30 seconds and then put it back in. You may have to tweak the bios settings afterward, but the password will be gone.

Good Luck!

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Please can you tell me how to reset the cmos on a samsung R510 Laptop


Hello you just have to remove the cmos battery:


10_18_2012_1_51_22_pm.gif
Press the release pad and the battery will pop out
DO NOT have any power on disconnect all power and usb cables
when you do that.

Wait for 10 min. or so with the battery out
and the bios will reset back to factory settings.

Replace the battery and boot up your machine and enter the bios
you kave to configure the boot order.

Here is some youtube videos how you do that:

http://www.youtube.com/results?search_query=Intel+D945GTP+bios+setting&oq=Intel+D945GTP+bios+setting&gs_l=youtube.12...55167.59517.0.61846.6.6.0.0.0.0.85.411.6.6.0...0.0...1ac.1j2.lSt1MwgqUkQ

But it depends what bios you have.

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- Seems like a BIOS password issue. You need to reset the BIOS and in order to do that you need to take out the CMOS/Lithium battery out for about 5 seconds and put it back in.
- Make sure you are static free and the laptop should be turned off completely, battery and power cord unplugged before opening the bottom panel.
- Locate the CMOS battery. Most of the time it is located under the memory modules or hard drive depending on the brand and model of the laptop.
- If the CMOS battery is soldered to the motherboard and you don't have experience with soldering, i suggest you bring the laptop to someone who knows how to.
- If you do not want to remove the CMOS battery, what you can try is short circuit the jumper settings. Click here for tips on how to locate jumper settings.
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Can anybody tell me the location and/or board identifier of the bios chip on the motherboard for this model. I'm trying to clear out a password (the start-up kind) for a friend of mine, but I've...


some motherboards do have a pin/plug which can remove passworcs i would need to name and model number of the board to find the specifications Power off the computer and make sure that it is unplugged

Open up your computer case. You need physical access to the motherboard to complete this procedure

Find a circular, (mostly) silver metallic object on the motherboard. This is the CMOS battery

CAREFULLY remove the CMOS battery, avoid touching it with your fingers, and leave it out for about 120 seconds. This will flush the CMOS memory which stores the BIOS password and all other configuration. (See Warnings)

Set the battery back into place and power on the computer

The computer should then warn you that the CMOS configuration could not be found. You can either reconfigure it yourself or restore defaults. Restoring the default configuration should be fine.

You will notice that the BIOS password has been cleared and you can boot without it. You may reset the BIOS password to something else by going into the BIOS configuration and setting a new User Password (The Supervisor Password controls access to the BIOS, NOT the computer!)

Hope this helps
jumper.jpg

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How do you get the CMOS back on the Acer Aspire M1640


If you can enter the BIOS, by pushing either F2 or the Delete key after starting up the computer and seeing the first splash screen, you can reset the BIOS to factory settings. If you cannot enter the bios, in order to reset the CMOS, you must open the tower, look for the small CMOS battery (small watch style battery) and look for a set up 3 pins near the battery. There will be a jumper on on two of the pins. If you remove the watch battery and move the jumper over to the other two pins, replace the battery. Then remove the battery again and place the jumper back in the original location and replace the battery.

This process will reset the CMOS. You must also be sure to unplug the power cord from the tower before starting this process. Be sure the watch battery is not dead or the settings will not hold. So, if you're not sure, replace the watch battery.

If you found this information helpful, please remember to leave positive feedback.

Brian

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2 Answers

"Reset you're cmos/bios jumper to


HI,
No need to worry. There are many known ways to reset / remove / bypass the password:
  • By removing the CMOS battery
  • By using the motherboard jumper
  • By using MS DOS command
  • By using software
  • By using Backdoor BIOS password
Now I'll try to explain each method one by one:
A. By Removing the CMOS Battery:
xrojer_2.jpg
Almost all motherboards use a small coin sized CMOS battery to store all BIOS settings along with the password. To reset the password, unplug the PC, open the cabinet and remove the CMOS battery for approx. 15-30 minutes and then put it back. It'll reset all BIOS settings as well as the password and you'll need to re-enter all settings.
If it fails, then try to remove the battery for at least one hour.

B. By Using the Motherboard Jumper:
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.

C. By Using MS DOS Command:
This method works only if you have access to the system when its turned on because this method requires MS DOS. Open Command Prompt from Programs menu and provide following commands one bye one:
debug
o 70 2E
o 71 FF
quit
NOTE: The first character in the above commands is "O" and not the number 0.
After providing the above commands, restart your system and it should reset the CMOS Settings along with the BIOS password.
If you are curious to know how it works? then let me explain the above commands:
In this method we are using the Debug tool of MS DOS. The "O" character present at first in these commands, outputs the values to IO ports. The number 70 and 71 are port numbers which are used to access CMOS memory. By providing FF value we are telling CMOS that there is an invalid checksum and it resets the CMOS settings as well as BIOS password.

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Cannot make changes to cmos setup utility


Just remove the CMOS battery and replace the new one i this the cost may be Rs 8 to 15. It will work surely or do in your motherboard reset the bios settings there will be one bios reset pin just see it careful.surely problems will be solved.If it is solved mail me at sathis_saas@hotmail.com.


If it is solved please say thanks !!!!!!!!!!!!!!!



************** All the Best **************************

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In order to reset BIOS you need to remove the CMOS battery located on the motherboard and re insert again

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Yes, if you consult your motherboard manual this will show you the location of the cmos battery and reset jumpers. You can either move the jumpers from pins 1+2 to 2+3 and then back again after a few seconds or remove the cmos battery for a few seconds. Make sure your pc is off!

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