Lenovo All In One C240 (Product Family) Hard disk Replacement - iFixit Repair Guide
Lenovo 10113 All in One Disassembly - YouTube
User manual Lenovo C240 (English - 45 pages)
Computadora All in One Lenovo C240: Procesador Intel Celeron 847 (1.1 GHz), Memoria 2 GB DDR3, D.D. de 500 GB, DVD±R/RW DL, Video Intel HD Graphics, Windows 8 (64 Bits), Pantalla LED de 18.5".
Lenovo C240 All in One Desktop PC Hands on Overview - YouTube