All private computer systems have a small battery on the motherboard that provides energy to the Complementary Metal Oxide Semiconductor (CMOS) chip, hence the name CMOS battery. This CMOS battery powers the chip, holding information in regards to the system's configuration, such because the arduous disk, date and time, and so on. It supplies energy even when the computer is off and permits the CMOS to save all of the settings. You possibly can count on the CMOS battery to last for up to 5 years. The more your pc is used, the longer the battery will final. How Do you know 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 seems on your display screen. Press F1 to continue appears on your display. Invalid drive specification seems on the display after you've got pressed F1. Clock Error or Clock Message seems on your screen. The clock on the computer loses time. The computer is continually exhibiting the wrong date.
Should you expertise any of those signs, it's likely time to alter the battery in your computer. If you do not change the battery, the battery will die. Your battery is useless when your display screen is clean and you have thus lost your CMOS Memory Wave Program. When a CMOS battery fails, it might probably lead to difficulties in booting your laptop, because the BIOS settings, which are important for the working system to communicate with the hardware, are misplaced or reset. Security First: Earlier than starting, ensure the computer is turned off. Unplug all cables and peripherals to stop any electrical accidents or injury to the ports. Entry the Battery: For a desktop pc, you will must open the case to access the motherboard. In a laptop, the placement of the CMOS battery is likely to be under one of the panels on the underside or, in some circumstances, below the keyboard. Remove the Old Battery: The CMOS battery is often held in place by a clip.
Gently push the clip apart to launch the battery. Be careful not to make use of excessive power that could injury the motherboard. Insert the brand new Battery: Memory Wave Be certain the new lithium battery is identical sort because the one you're replacing. Insert it into the battery socket, making certain the positive aspect is facing up. Reassemble and Check: As soon as the new battery is in place, reassemble your computer and re-screw the computer or laptop casing. Reconnect all cables and peripherals, then turn in your computer. Examine if the BIOS settings must be configured and if the clock retains the correct time and date. It is because the BIOS may revert to its default configuration, Memory Wave which might not be optimum for your specific hardware setup or the best way you use your laptop. Familiarize yourself with entering the BIOS setup (often by pressing a key like F2, Delete, or Esc during booting) and regulate the settings as needed. We up to date this text at the side of AI know-how, then made certain it was truth-checked and edited by a HowStuffWorks editor.
Typically, pc CMOS batteries final 3-5 years. Can a useless CMOS battery affect the operating system? Yes, a useless CMOS battery can cause issues with the working system by resetting the BIOS settings, which in turn can have an effect on the system's skill to detect and configure hardware. Is it essential to substitute the CMOS battery in laptops as well as desktop PCs? Each desktops and laptops use a CMOS battery, although the replacement process might be more difficult in laptops resulting from their compact design. All the time consult your laptop’s handbook and consider consulting knowledgeable. How do I do know which lithium battery to purchase as a alternative? Most computers use a CR2032 lithium battery, but it is best to check the previous battery's model before purchasing a brand new one. Guarantee you purchase the precise match to avoid compatibility points. Are there any risks involved in changing the CMOS battery myself? While replacing the CMOS battery is usually secure when performed carefully, there is a risk of damaging the motherboard in the event you apply an excessive amount of force or unintentionally discharge static electricity.