CMOS battery failure symptoms are often hard to detect. You may not be aware you have a problem until your laptop won’t boot up, or gets stuck in an infinite reboot loop. It’s important to know what signs to look for so you can prevent it from happening. Here are the most common CMOS Battery Failure Symptoms:
-Starts with slow bootups followed by total shutdowns
-Laptop will only display “No Operating System Found” message when turned on
-Screen displays all black and nothing else (this is usually caused by hardware problems)
-The internal clock resets itself every time the laptop boots up which causes programs like Skype and Outlook Express to malfunction.
– BIOS password disappears and can’t be reset
– Hard drive is not detected by BIOS
CMOS battery failure symptoms can be difficult to detect, but it’s important to be aware of them so you can take action before it’s too late. The most common symptoms are slow bootups followed by total shutdowns, laptop displaying “No Operating System Found” message, black screen, and resetting of internal clock. If you are experiencing any of these symptoms, it’s likely that your CMOS battery needs to be replaced. You can purchase a new CMOS battery online or from your local computer store. Make sure you consult your laptop’s manual before replacing the battery to ensure you are doing it correctly. Once the new battery is installed, your computer should start up and run normally again. If not, there may be other underlying issues that need to be addressed.
BIOS needs to remain operational even when your computer isn’t plugged into a power source. That’s where the battery comes in. When your computer gets unplugged, BIOS relies on the CMOS battery for power.You’ll find CMOS batteries in both laptops and desktop PCs, but it’s used more frequently in a laptop.
That’s because laptops are usually unplugged for a longer amount of time than desktop PCs. Most desktop PCs are unplugged from their power source very infrequently.The CMOS battery gets charged whenever your laptop is plugged in. It’s only when your laptop is unplugged that the battery loses charge. Most batteries will last 2 to 10 years from the date they’re manufactured. The more you leave your laptop plugged in, the longer your battery will last.
Remove and Replace the CMOS battery
Let’s remove that pesky ol’ CMOS battery and replace it with a new one. It’s a relatively simple process. You’ll only need a few supplies:
- Screwdriver (Phillips or flathead, depending on the type of laptop you have)
- Compressed air
- New CMOS battery
- ESD mat
Battery failure may also prevent you from connecting to the internet. BIOS is tasked with maintaining hardware and network drivers.One thing you should be relieved about is that CMOS failure typically won’t cause you to lose any of your personal files. Nothing in storage is affected. You’ll still have all of your pictures, videos, and documents waiting for you as soon as you’ve replaced the battery.
If you are experiencing any of these symptoms, it’s likely that your CMOS battery needs to be replaced. You can purchase a new CMOS battery online or from your local computer store. Make sure you consult your laptop’s manual before replacing the battery to ensure you are doing it correctly.
Once the new battery is installed, your laptop should start up and run normally again. If not, there may be other underlying issues that need to be addressed. Contact a technician for help if you’re not comfortable diagnosing and fixing the problem yourself.
Remember, prevention is always better than cure, so be sure to keep your laptop’s CMOS battery in good condition by following the manufacturer’s recommended maintenance schedule.