Contents1 Working on your computer.............................................................................................................................6Safety instructions.............................................................................................................................................................6Before working inside your computer............................................................................................................................. 6Turning off your computer................................................................................................................................................7Turning off your computer — Windows 10.............................................................................................................. 7After working inside your computer................................................................................................................................ 72 Removing and installing components............................................................................................................. 8Recommended tools..........................................................................................................................................................8Cover................................................................................................................................................................................... 8Removing the cover.................................................................................................................................................... 8Installing the cover.......................................................................................................................................................8Front Bezel..........................................................................................................................................................................9Removing the bezel..................................................................................................................................................... 9Installing the bezel........................................................................................................................................................9Opening the front panel door..................................................................................................................................... 9Hard drive.......................................................................................................................................................................... 10Removing the 3.5 inch hard drive assembly........................................................................................................... 10Installing the 3.5 inch hard drive assembly...............................................................................................................11Removing the 2.5 inch hard drive assembly............................................................................................................ 11Installing the 2.5 inch hard drive assembly..............................................................................................................12Optical drive...................................................................................................................................................................... 12Removing the optical drive assembly ......................................................................................................................12Installing the optical drive assembly ........................................................................................................................ 13WLAN card........................................................................................................................................................................ 14Removing the WLAN card.........................................................................................................................................14Installing the WLAN Card.......................................................................................................................................... 14Memory module................................................................................................................................................................15Removing the memory module.................................................................................................................................15Installing the memory module................................................................................................................................... 15Expansion card..................................................................................................................................................................15Removing the PCIe expansion card......................................................................................................................... 15Installing the PCIe expansion card............................................................................................................................16Power supply unit............................................................................................................................................................. 16Removing the power supply unit (PSU)..................................................................................................................16Installing the power supply unit (PSU).................................................................................................................... 17Power switch.....................................................................................................................................................................17Removing the power switch..................................................................................................................................... 17Installing the power switch........................................................................................................................................18Coin cell battery................................................................................................................................................................18Removing the coin cell battery................................................................................................................................. 18Installing the coin cell battery....................................................................................................................................19Heat sink............................................................................................................................................................................ 19Contents 3