The most important thing to remember when replacing a CMOS battery is that static electricity kills the computer. There is an electric potential in almost everything, including the human body. The amount of charge required to kill a sensitive electronic device is so much less than you've ever experienced that you could unknowingly scorch the motherboard components until the moment the computer starts up.
Step
Step 1. Turn off the computer
Step 2. Unplug the computer power cord
Step 3. Remove the side cover
Make sure you wear a static electricity bracelet (see Tips)
Step 4. Remove the old battery with a fingernail or use a non-conductive screwdriver
Step 5. Install a new battery
Step 6. Replace the side cover
Step 7. Reconnect the power cable
Step 8. Turn on the computer
Step 9. Enter BIOS Setup and all necessary changes
Step 10. Done
Tips
- I've only emptied one computer without a bracelet on, and that was after playing for 10 hours. Motherboards can still get electrocuted, but you can prevent this if you remember one thing: Before touching any electrical component, touch the computer case frame (the metal frame inside, not the plastic case) and keep touching while working on the contents. Of course, you can only work with one hand so it's more difficult than you might think.
- BIOS settings (BIOS settings) will return to the original factory settings when the battery is removed, but if you need to replace the computer battery, the settings are probably the default. This setting is sufficient if you are a regular computer user. If you play computer games a lot, chances are you already know the settings you need to change. If you are still a layman, DON'T TAKE CARE!
- A static electricity bracelet is a bracelet that is worn on the wrist. This bracelet has a cable that attaches to the computer case using an alligator click. This bracelet ground you to the computer case and balances electrical energy.
