|
Introduction |
| If the coin cell or CMOS battery of your Lenovo ThinkPad T480 begins to fail, follow this guide to replace it. | | | The CMOS or coin cell battery provides power to the CMOS (Complementary Metal Oxide Semiconductor) chip. Some signs of CMOS battery failure include settings in the computer setup changing, “Booting Error” messages, the laptop running slowly, or the laptop shutting down. | | | Prior to beginning this repair, be sure to disable the internal battery, shut down the laptop and disconnect from the external power source. |
|