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These are some common tools used to work on this device. You might not need every tool for every procedure.


Visit the troubleshooting page to help identify several possible hardware problems.

Identification and Background

Lenovo ThinkPad T420s can come with three processors: Intel Core i3, i5, or i7. With a battery life of 5 hours, it is used mainly in business settings. You can identify the model of the ThinkPad on the bottom right of the screen; it should say “T420s". On the bottom of the ThinkPad, you can find the manufacturer information. The T420s was originally released in February of 2011 with a starting weight of 3.94 lbs. It can be bought with 1GB, 2GB, or 4GB of memory and has a total capacity of 16GB (a BIOS update may be required). The most notable feature of the ThinkPad is its TrackPoint, which is a red, circular cursor control device located on the center of the ThinkPad's keyboard.

Additional Information

View Statistics:

Past 24 Hours: 11

Past 7 Days: 47

Past 30 Days: 251

All Time: 18,258