Contents1 Working on your computer............................................................................................................................. 6Turning off your computer — Windows 10.....................................................................................................................6Turning off your computer — Windows 8...................................................................................................................... 6Turning off your computer — Windows 7...................................................................................................................... 6Before working inside your computer..............................................................................................................................6Safety instructions............................................................................................................................................................. 7After working inside your computer.................................................................................................................................72 Disassembly and reassembly..........................................................................................................................8Screw size list..................................................................................................................................................................... 8Recommended tools.......................................................................................................................................................... 8Subscriber Identification Module (SIM) card..................................................................................................................9Removing SIM card or SIM card tray........................................................................................................................ 9Replacing SIM card...................................................................................................................................................... 9Base cover.......................................................................................................................................................................... 9Removing base cover.................................................................................................................................................. 9Installing base cover.................................................................................................................................................... 11Battery............................................................................................................................................................................... 12Lithium-ion battery precautions................................................................................................................................ 12Removing battery....................................................................................................................................................... 12Installing battery..........................................................................................................................................................13PCIe Solid State Drive (SSD).......................................................................................................................................... 13Removing PCIe SSD...................................................................................................................................................13Installing PCIe SSD..................................................................................................................................................... 14Speaker.............................................................................................................................................................................. 14Removing speaker module.........................................................................................................................................14Installing speaker module...........................................................................................................................................16Coin-cell battery............................................................................................................................................................... 16Removing the coin cell battery................................................................................................................................. 16Installing coin cell battery...........................................................................................................................................17WWAN card.......................................................................................................................................................................17Removing WWAN card.............................................................................................................................................. 17Installing WWAN card.................................................................................................................................................18WLAN card........................................................................................................................................................................ 18Removing WLAN card................................................................................................................................................18Installing WLAN card.................................................................................................................................................. 19Memory module............................................................................................................................................................... 20Removing memory module....................................................................................................................................... 20Installing memory module......................................................................................................................................... 20Heat sink ........................................................................................................................................................................... 21Removing heat sink assembly................................................................................................................................... 21Installing heat sink assembly.....................................................................................................................................22Power connector port..................................................................................................................................................... 22Contents 3