How to reset CMOS and why you need it

Clearing the motherboard CMOS will reset the BIOS settings to factory defaults. The settings defined by the motherboard manufacturer are what most users will use. Clearing CMOS can be caused by troubleshooting or fixing some computer or hardware compatibility issues.



Beware of electrostatic discharge and all potential dangers inside your computer.

Although rare, sometimes you need to reset the CMOS. CMOS, known as Complementary Metal-Oxide-Semiconductor of course, will most likely be an efficient small piece of memory to store your computer’s BIOS as well as the UEFI configuration. This configuration only controls what your computer does at startup.

If you screw up your BIOS due to an incredibly bad overclock setting, change the wrong BIOS settings, or don’t boot machines properly, resetting the BIOS and possibly UEFI to factory settings can often things. Also, sometimes a virus can damage your BIOS. All custom BIOS configurations are lost during a reset, but these types of configurations are usually easy to reset. If you have particularly complex builds, it’s often possible to save a new working UEFI setup and restore it later. You may not have it yet, but it’s good practice for the future.more.

If you’ve built your own computer, resetting the CMOS should be easy. Pre-built systems will be a bit more complex and you can usually use one of the following methods for yourself.

Note. For brevity, the term “BIOS” is used below to refer to UEFI and BIOS firmware.

Reset CMOS With Case A Button

How do I fix my CMOS settings?

In the CMOS settings, look for an option to reset key CMOS defaults or an option to load default security settings.
When you find and buy, you will be asked if you are sure you want to download the bugs.
Be sure to save and exit after creating the default values.

If you see a nice button on your computer case that says “Clear” or “Reset”, your CMOS will be reset. This is the easiest way, but may not work for all computers.

2. Unplug your computer from the electrical outlet. You can unplug the power supply from the back of our power adapter or from a wall outlet.

3. Locate the to-do button labeled Erase or Reset. It’s usually second or next to the power button.

4. Hold down the “Clear” or “Reset” button from five to ten, one, then release. You may need to use the tip of the absolute pen to hold down the icon if it’s small.

6. Press the appropriate key to access the BIOS programs. Depending on maternalthis can also be ., Delete, F2, F8 or F12 kbd >. Different computer manufacturers use different keys, or you can specify Windows 10 to boot in our BIOS.

7. Adjust the BIOS settings if necessary. Some motherboards acquire a “Load Optimized Defaults” option which is always a good starting point.

Reset CMOS With A Single Button On The Motherboard

Some high-end motherboards have a Johnson CMOS reset board installed. It can sometimes be accessed by opening the case of the computing device and looking inside the case for a “CLR”, “CLEAR” or possibly “RESET” button.

2. Unplug your computer from the electrical outlet. You can unplug the power supply from the back of your valuable power supply or from a wall outlet.

3. Press the chassis power button several times to discharge any capacitors on the motherboard.

4. Locate the desired button next to the motherboard. If you don’t know where to find it, please refer to the mat guide.Erin’s board. You can find them on the motherboard manufacturer’s website, or even on the computer manufacturer’s website.

5. Next to the button, press and hold with your finger or pencil eraser for five to ten seconds. If you use your finger, be sure to ground yourself by tapping on a bare metal surface (doorknobs are great) before touching anything inside your own computer.


Reset By Cmos Settings By Reinstalling The CMOS Battery

If you have no other alternative to reset the CMOS, clear the saved settings by removing the CMOS battery. This battery allows the volatile CMOS memory to be powered even when the computer is unplugged from the electrical outlet. Removing and removing the battery will clear all CMOS and force a reset.

3. Press the power button several times to identify the capacitors.

4. Locate the CMOS power supply on the motherboard. Usually it is CR2032 battery, this battery is coin size as below. You can find it on most motherboards next to the PCI Express slots. Accurate meSee the manual for your favorite motherboard for location.

5. Carefully remove the CMOS battery. If it is normally secured with a metal sheet, slide the battery out of the clamp. Be careful not to bend the clip.

Manually Reset CMOS Using A Jumper On The Motherboard

By setting the correct jumper, you can enable the CMOS erase function.

3. Press the button forcibly several times to clear a lot of capacitors.

4. Open the computer case and locate the transparent CMOS pins. This is usually a two- or possibly three-pin configuration installed on the motherboard labeled “CLEAR”, “RESET”, or always “CLRPWD” for “Clear Password”.

5. For a specific three-pin configuration with a common pin, move the center plastic jumper to connect the center pin and the defined previously disconnected pin. For a permanent two-pin configuration, remove the jumper completely.

6. Wait a few minutes and return the jumper to its original position. go

How do I fix the CMOS battery on my computer?

Turn off your computer.
Unplug the power cord to make sure your computer is not receiving power.
Make sure you are grounded.
Find the tall battery on the motherboard.
take it away
Wait 5-10 minutes really.
Insert the battery rod.
Turn on your computer.

You can resetCMOS using one of the methods described above. Let us know if this usually works for you. It all pays off once, take the time to tweak your individual BIOS settings.

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What happens if your CMOS battery dies?

If the CMOS battery is low, the configurations are lost when the personal computer is turned off. You may be prompted to reset the time and date when you start your computer. Sometimes the loss of settings prevents the computer from restarting the operating system.