What happens if bios battery is removed

The CMOS battery is not there to provide power to the computer when it is in operation, it is there to maintain a small amount of power to the CMOS when the computer is powered off and unplugged. Without the CMOS battery , you would need to reset the clock every time you turned on the computer. Salia Roggero Professional. How do you reset the BIOS? Restart your computer. Wait for the computer's first startup screen to appear. Repeatedly tap Del or F2 to enter setup.

Wait for your BIOS to load. Find the "Setup Defaults" option. Tien Morgenthal Professional. How do you reset the CMOS? Shutdown your computer. Remove the power cord to make sure that your computer receives no power. Make sure you're grounded. Find the battery on your motherboard. Remove it. Wait 5 to 10 minutes. Put the battery back in. Power on your computer.

Emmaline Indurain Explainer. Is my CMOS battery dying? A constant beeping sound is another sign that your CMOS battery is dying.

The final sign that your CMOS battery is going dead is that you'll receive an error message. Sometimes the loss of settings will prevent the computer loading the operating system. The Lithium battery , which is a round one the size of a coin and can be easily found at watchmaker's and computer parts stores, has long been the most used type. To buy one of these batteries, all you have to do is to look for a model CR one. Replacing the motherboard lithium battery demands some care.

If your computer is custom built with an enthusiast-quality motherboard, there's a small possibility there's a way to check the CMOS battery status right in the BIOS. There are rechargeable batteries e. ML - rechargeable that are the same size, but they can't be charged by your computer.

Some motherboards used to have rechargable CMOS batteries on them. What if you drop the battery taking it out of its holder? Although somewhat standardized, not all motherboards use the CR battery. They are all Verify it is accessible and can be removed. Some CMOS batteries may be held down by a metal clip or bar. Category: technology and computing laptops. If the CMOS battery in your computer or laptop dies, the machine will be unable to remember its hardware settings when it is powered up.

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We were asked this question and my answer was "nothing happens there is no data loss" but the teacher told me that's a close answer! So what exactly happens in this case? First of all: Don't try this at home. It is damn easy to have the battery usually a CR drop onto the motherboard and short-circuit something.

Or cause arcing across the contacts which also may do damage. It doesn't make any difference if this is a laptop or desktop. In a desktop it is just easier to reach the battery. Most laptops require a fair bit of de-montage to get at that battery. If the computer is running while it is removed nothing will happen, until you shutdown the computer and try to start it again.