Resetting Lenovo Laptop CMOS Every computer system and laptop is equipped with a complementary metal-oxide-semiconductor (CMOS) chip and battery. The chip has all the BIOS details in its memory and the device battery lets the chip to maintain and hold this information when the device is powered off. The CMOS chip’s memory will be erased if the user removes the CMOS battery from the turned off computer (in the state of receiving of no power). You can locate the CMOS battery in Lenovo laptop beneath the memory compartment cover on the back side making it easy to take out the battery for resetting the CMOS memory. And in case if you are encountering any issue with your device then get in touch with the team of Lenovo Repair Centre and they will help and assist you further. What all you are required to do is follow the below steps: a. After turning off the Lenovo laptop, unplug the power adapter and pull out the main battery. b. Take out the memory compartment cover unscrew the captive screws. Take the cover off. c. Now with ease take out the cell out of its holder with the help of screw driver and disconnect the cable. Put the cell back after waiting for at least 30 minutes. d. Tighten the screw put the memory compartment cover back to its place. e. Turn on the machine and keep the main battery back on the laptop. The CMOS is now reset. With the help of above steps you can easily reset the Lenovo Laptop and in case of any issue you can reach our Lenovo Laptop Repair Team. Call Lenovo Laptop Repair Centre Canada team for fixing and resolving any trouble by reaching us at 1-855-264-9333 Apart from the above issue, you can also discuss your troubles and concerns with our team. We assure you to get best possible solutions by dialing our Lenovo Repair Centre Number 1-855-264-9333 . You can also reach us via live chat or email support and we will contact you as soon as possible. We are there to help round the clock. Source