How to – Lenovo ThinkPad L420 repair, upgrade and update to Windows 10

THE BATTERY SHOULD BE REMOVED BEFORE WORKING ON THE LAPTOP LIKE THIS!
This is still a decent laptop in 2017.

NEW WINDOWS 10 FREE UPDATE METHOD: https://www.youtube.com/watch?v=_zZ_FnWzqK8

Link for Windows 10 upgrade: https://www.microsoft.com/en-us/accessibility/windows10upgrade?tduid=(14c348e893a91089cb2980533c6ee123)(256380)(2459594)(TnL5HPStwNw-0FBZfNm6YPFXNhiu3o52rA)()

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how to repair windows 10