All personal computers have a small battery on the motherboard that gives energy to the Complementary Steel Oxide Semiconductor (CMOS) chip, hence the name CMOS battery. This CMOS battery powers the chip, holding info about the system's configuration, such because the arduous disk, date and time, and many others. It offers power even when the pc is off and allows the CMOS to save lots of all the settings. You'll be able to expect the CMOS battery to final for up to five years. The more your pc is used, the longer the battery will last. How Have you learnt That Your CMOS Battery Is Dying? The keyboard acts up with keys and the cursor not responding. Invalid configuration will appear on your screen. Run Setup seems in your display. Press F1 to proceed appears on your display screen. Invalid drive specification seems on the screen after you've got pressed F1. Clock Error or Clock Message appears in your screen. The clock on the pc loses time. The pc is consistently displaying the mistaken date.

Should you expertise any of these symptoms, it's possible time to alter the battery in your pc. If you don't change the battery, the battery will die. Your battery is dead when your screen is blank and you have thus lost your CMOS Memory Wave Experience. When a CMOS battery fails, Memory Wave it might probably result in difficulties in booting your laptop, because the BIOS settings, that are important for the operating system to speak with the hardware, are misplaced or reset. Security First: Before beginning, guarantee the pc is turned off. Unplug all cables and peripherals to prevent any electrical accidents or injury to the ports. Access the Battery: For a desktop computer, you may need to open the case to access the motherboard. In a laptop, the location of the CMOS battery might be under one of the panels on the bottom or, in some instances, beneath the keyboard. Take away the Outdated Battery: The CMOS battery is often held in place by a clip.

Gently push the clip aside to launch the battery. Be careful not to use extreme drive that would injury the motherboard. Insert the new Battery: Ensure the new lithium battery is identical kind because the one you are replacing. Insert it into the battery socket, making certain the optimistic facet is going through up. Reassemble and Check: Once the new battery is in place, reassemble your laptop and re-screw the pc or laptop computer casing. Reconnect all cables and peripherals, then turn in your computer. Verify if the BIOS settings should be configured and if the clock retains the right time and date. This is because the BIOS may revert to its default configuration, which may not be optimum in your specific hardware setup or Memory Wave the way you use your laptop. Familiarize your self with coming into the BIOS setup (normally by pressing a key like F2, Delete, or Esc during booting) and regulate the settings as wanted. We up to date this article together with AI technology, then made sure it was truth-checked and edited by a HowStuffWorks editor.

Typically, pc CMOS batteries last 3-5 years. Can a lifeless CMOS battery have an effect on the operating system? Sure, a lifeless CMOS battery can cause issues with the operating system by resetting the BIOS settings, which in flip can have an effect on the system's skill to detect and configure hardware. Is it essential to exchange the CMOS battery in laptops in addition to desktop PCs? Both desktops and laptops use a CMOS battery, although the substitute process might be more difficult in laptops resulting from their compact design. All the time consult your laptop’s manual and consider consulting an expert. How do I do know which lithium battery to buy as a substitute? Most computers use a CR2032 lithium battery, however it's best to check the outdated battery's model before purchasing a new one. Guarantee you buy the exact match to avoid compatibility points. Are there any dangers involved in changing the CMOS battery myself? Whereas changing the CMOS battery is generally protected when accomplished rigorously, there's a threat of damaging the motherboard in case you apply an excessive amount of drive or unintentionally discharge static electricity.