If you’ve owned your laptop for several years, it’s possible your computer is malfunctioning because the CMOS battery died. The CMOS battery is a piece of hardware that’s unique to laptops. When it dies, it could cause your laptop to encounter problems booting up.
Will a dead BIOS battery?
If the CMOS battery dies, settings will be lost when the computer is powered down. You will probably be asked to reset the time and date when you start the computer up. Sometimes the loss of settings will prevent the computer loading the operating system.
What happens if the BIOS battery dies?
Can a motherboard run without a battery? Technically, YES. Removing the CMOS battery will allow your computer to run however, you will lose the date and time settings, the computer will boot with default BIOS settings or you will have to choose the drive that the OS is installed every time you start your computer.
How long does a BIOS battery last?
The CMOS battery is a small battery fitted on the motherboard of your computer. It has a life of around five years.
Can CMOS battery cause no power?
Dead CMOS would not really cause a no-boot situation. It simply helps store BIOS settings. However a CMOS Checksum Error could potentially be a BIOS issue. If the PC is literally doing nothing when you press the power button, then it could even be PSU or MB.
How do I reset my BIOS battery?
To reset the BIOS by replacing the CMOS battery, follow these steps instead:
- 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.
How long does it take to remove CMOS battery?
Locate the round, flat, silver battery on the motherboard and carefully remove it. Wait five minutes before reseating the battery. Clearing the CMOS should always be performed for a reason – such as troubleshooting a computer problem or clearing a forgotten BIOS password.
What problems can a dead CMOS battery cause?
Your computer will sometimes turn off or not start and will generally show startup errors explaining an issue with the battery. (CMOS checksum and read error) Drivers may stop working, it can trigger driver blue screens and crashes. Might not be able to locate the mouse, keyboard or printer.
Why is my computer not booting up?
Common boot up issues are caused by the following: software that was installed incorrectly, driver corruption, an update that failed, abrupt power outage and the system did not shut down properly. Let’s not forget registry corruption or virus’ / malware infections that can completely mess up a computer’s boot sequence.
How do I know if my BIOS battery needs replacing?
Here are the CMOS battery failure symptoms:
- The laptop has difficult booting up.
- There’s a constant beeping noise from the motherboard.
- The date and time have reset.
- Peripherals aren’t responsive or they don’t respond correctly.
- Hardware drivers have disappeared.
- You can’t connect to the internet.
When should I replace my BIOS battery?
It is recommended that you change the CMOS battery every 5 years. Open the BIOS screen and note all the information on a piece of paper. It’s important that you don’t make any modifications.
Can CMOS battery cause black screen?
Can CMOS battery cause black screen? Short answer yes. With a dead CMOS battery the BIOS loses its settings so it would be very possible to get a blank screen.
Can a CMOS battery recharge?
Most CMOS batteries are CR2032 lithium button cell batteries and are not rechargeable. There are rechargeable batteries (e.g. ML2032 – rechargeable) that are the same size, but they can’t be charged by your computer.