Updating thinkpad bios
After that you can lift up and remove the hard drive assembly. I also removed a small cover located in the lower left corner of the bottom base but… I think, in some different Think Pad Edge models there is a WWAN card installed here. In order to unlock the touchpad connector, lift up the brown clip in the direction shown on the following picture. Now you can pull the touchpad cable from the connector. There are three cables connecting the keyboard to the motherboard. The third connector hidden under the black ribbon cable. Do not separate the black clip from the white base. As I mentioned earlier, the third keyboard connector located under the black ribbon cable. Move the brown clip in the direction shown by the yellow arrow. After the connector is unlocked, you can pull the cable. After all three connectors unlocked and cables released, you can remove the keyboard.
I don't have any recovery media and this is a business computer. Please read the other forum Before replying to this one i really need this solved quick.You can just jot down the BIOS number and match it against the latest version from the manufacturer’s website, if needed update the same.BIOS not only helps maintain the stability of your system but it will also increase the security and try to protect the system from any vulnerability. Remove six screws securing the palmrest/touchpad assembly. You can separate the palmrest assembly from the base with a guitar pick.The Lenovo Think Pad X220 is an ultraportable notebook computer built on the Intel Sandy Bridge platform.