I spent a couple hours repairing an old ThinkPad T400 that I found completely taken apart in a drawer. I rebuilt it using mostly the spare parts I had laying around. There’s still some stuff missing and screws unscrewed, and the LCD is broken, but it works. If I keep it in the dock, it actually works really well. I decided to install Windows 10 on it, because I had 2 unused licenses for it.