Home Tech UpdatesComputer Frequent Question Does Removing Cmos Battery Reset Bios Password

Frequent Question Does Removing Cmos Battery Reset Bios Password

by Patricia R. Mills

Removing the CMOS battery resets the BIOS password.

Remove CMOS Battery If you remove the CMOS battery, as shown in the figure, the system will lose all CMOS settings, including the BIOS password.

Does BIOS reset to remove the password?

Turn on the computer and enter the BIOS. Any settings changes you have previously made in the BIOS, such as disk allocation or boot order, will need to be reset. If the password is still not removed, the BIOS password cannot be reset by removing the CMOS batteries.

What happens if the CMOS battery is removed?

If the computer is running while it is removed, nothing will happen until you shut it down and try to start it up again. At that point, he forgot his clock and (in most cases) reset all BIOS settings to factory defaults.


Will removing the laptop battery reset the BIOS?

Just removing the battery for 15 seconds is enough to reset the bios. Many motherboards that don’t have a bios reset button have a jumper that, if moved to the other pin, will also reset the bios.

Can I remove the CMOS battery?

The battery can be removed by sliding it out from under the clip. Do not bend this clip to remove the battery, as a bent clip may prevent the new battery from remaining plugged in. If you cannot locate the CMOS battery, see your motherboard documentation or contact your computer manufacturer.

How do you bypass a BIOS password?

The easiest way to remove a BIOS password is to remove the CMOS battery. A computer remembers its settings and keeps track of time even when turned off and unplugged because these parts are powered by a small battery inside the computer called a CMOS battery.

How do I reset a password-protected BIOS?

Reset BIOS Password Enter the BIOS password (case sensitive). Select the ‘Security’ menu and ‘Administrator Password’ Enter the current BIOS password when prompted. Enter and confirm your new password, or leave it blank. Select the ‘Exit’ menu. Select ‘Save changes and exit’ and OK when prompted.

How can I remove the administrator password?

Press Windows key + R to launch Run, and type lusrmgr. MSC and click OK. When the Local Users and Groups module opens, click Users on the left and right-click Admin in the middle pane. Leave the New Password and Confirm Password boxes blank and click OK. Now click Continue in the next window.


What is the BIOS administrator password?

System Password: This is requested before the operating system can boot. It is used to prevent others from changing BIOS settings. Two types of passwords can be set in the BIOS: Administrator password: The computer will only ask for this password when you try to access the BIOS.

Can a dead CMOS battery prevent a computer from booting?

Dead CMOS wouldn’t cause a no-boot situation. It simply helps to save BIOS settings. However, a CMOS Checksum error could potentially be a BIOS issue. If the PC does nothing when you press the power button, it could be PSU or MB.

How long does the CMOS battery last?

The CMOS battery charges when your laptop is plugged in. It’s not until your computer is disconnected that the battery loses control. Most batteries last 2 to 10 years from the date of manufacture.

Can a PC work without a CMOS battery?

The CMOS battery is not there to power the computer when running but to maintain a small amount of energy to the CMOS when the computer is turned off and unplugged. Without the CMOS battery, you would have to reset the clock every time you turn on the computer.

How long does it take to reset the BIOS by removing the battery?

After removing the battery, move the jumpers to the free position and leave them there for a few seconds. It should only take 30 seconds. You’re done when you move the jumper back to its normal work.

Can you replace the CMOS battery with the computer on?

If you remove and replace the CMOS battery while the power is on, you can lay the PC on its side or put some masking tape on the old and new batteries (or both) first. If you do it this way, the video will help you hold the battery and prevent it from falling on the board when you remove the old battery.

Can you clear CMOS without a Jumper?

If there are no CLR_CMOS jumpers or [CMOS_SW] on the motherboard, follow the steps to clear the CMOS: Carefully remove the battery and set it aside for about 10 minutes or more. (Or you can use a metal object to connect the two pins in the battery case to sort them out.).

Do laptops not have CMOS?

Laptops generally don’t have CMOS batteries, at least not comparable to desktops. Unplug the power, remove the battery (if possible), and press and hold the power button for about 30 seconds.

How often should you replace the CMOS battery?

These problems could be because your CMOS battery is dead, and it’s time to replace it. It is recommended to replace the CMOS battery every five years.

How do I find my BIOS password?

If you have forgotten the BIOS password, check with the motherboard manufacturer (or your computer dealer) to see if a backdoor password is available. For example, the Phoenix brand motherboard has the backdoor password PHOENIX, which you can type at the BIOS password prompt to access the computer.

Why does my BIOS have a password?

A BIOS password is authentication information that is sometimes required to log into a computer’s basic input/output system (BIOS) before the machine boots. Because it provides an extra layer of security, a BIOS password can help prevent unauthorized computer use.

Can BIOS be unlocked?

If there is a CMOS jumper on your computer’s motherboard, you need to clear it. The most common method for unlocking a BIOS lock is disconnecting the cables and removing the motherboard battery for a few minutes. However, there are other ways to accomplish the same task.

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