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All private computer systems have a small battery on the motherboard that gives power to the Complementary Steel Oxide Semiconductor (CMOS) chip, therefore the title CMOS battery. This CMOS battery powers the chip, holding info in regards to the system's configuration, such as the exhausting disk, date and time, etc. It gives energy even when the pc is off and permits the CMOS to avoid wasting all of the settings. You'll be able to anticipate the CMOS battery to final for up to 5 years. The extra your pc is used, the longer the battery will final. How Are you aware That Your CMOS Battery Is Dying? The keyboard acts up with keys and the cursor not responding. Invalid configuration will appear in your screen. Run Setup appears on your display. Press F1 to proceed seems on your screen. Invalid drive specification appears on the display screen after you have pressed F1. Clock Error or Clock Message seems in your display screen. The clock on the computer loses time. The pc is continually displaying the wrong date.
Do you have to expertise any of those symptoms, it is possible time to change the battery in your computer. If you don't change the battery, the battery will die. Your battery is useless when your display is blank and you have thus lost your CMOS Memory Wave Routine. When a CMOS battery fails, it might probably lead to difficulties in booting your computer, because the BIOS settings, that are essential for the operating system to speak with the hardware, are lost or reset. Security First: Earlier than beginning, guarantee the computer is turned off. Unplug all cables and peripherals to stop any electrical accidents or injury to the ports. Access the Battery: For a desktop computer, you will need to open the case to entry the motherboard. In a laptop, the situation of the CMOS battery may be under one of the panels on the bottom or, in some instances, underneath the keyboard. Take away the Old Battery: The CMOS battery is normally held in place by a clip.
Gently push the clip apart to release the battery. Be careful not to use extreme force that might damage the motherboard. Insert the brand new Battery: Be sure that the new lithium battery is similar kind as the one you're replacing. Insert it into the battery socket, ensuring the optimistic aspect is going through up. Reassemble and Check: Once the new battery is in place, reassemble your computer and re-screw the computer or laptop computer casing. Reconnect all cables and peripherals, then flip in your computer. Check if the BIOS settings have to be configured and if the clock retains the correct time and date. It is because the BIOS might revert to its default configuration, which will not be optimum on your particular hardware setup or the best way you employ your pc. Familiarize your self with getting into the BIOS setup (often by urgent a key like F2, Delete, or Esc throughout booting) and regulate the settings as wanted. We up to date this text together with AI expertise, then made certain it was fact-checked and edited by a HowStuffWorks editor.
Typically, computer CMOS batteries last 3-5 years. Can a lifeless CMOS battery affect the operating system? Sure, a lifeless CMOS battery may cause issues with the working system by resetting the BIOS settings, which in turn can affect the system's skill to detect and configure hardware. Is it necessary to exchange the CMOS battery in laptops as well as desktop PCs? Both desktops and laptops use a CMOS battery, though the alternative course of will be extra challenging in laptops because of their compact design. At all times consult your laptop’s handbook and consider consulting a professional. How do I know which lithium battery to purchase as a alternative? Most computer systems use a CR2032 lithium battery, however it's best to examine the old battery's mannequin before purchasing a brand new one. Ensure you purchase the exact match to keep away from compatibility issues. Are there any risks concerned in replacing the CMOS battery myself? While replacing the CMOS battery is usually secure when completed carefully, there's a threat of damaging the motherboard when you apply a lot force or accidentally discharge static electricity.