HP Dv7-1127cl HP Pavilion dv7 Entertainment PC - Maintenance and Service Guide - Page 104
System board, computer on, and then shut it down through the operating system.
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3. Lift the modem module (3) straight up to disconnect it from the system board. Reverse this procedure to install the modem module. System board NOTE: All system board spare part kits include replacement thermal material. Description Spare part number System board with RX781 Northbridge and ATI HD3450 graphics subsystem with discrete memory 486541-001 for use only with computer models equipped with AMD processors System board with M780G Northbridge and UMA graphics subsystem memory for use only with 486542-001 computer models equipped with AMD processors System board with PM45 Northbridge and nVidia NB9M-GE discrete graphics subsystem memory 480366-001 and 256-GB of graphics subsystem memory for use only with computer models equipped with Intel processors System board with PM45 Northbridge and nVidia NB9P-GS discrete graphics subsystem memory 480365-001 and 512-GB of graphics subsystem memory for use only with computer models equipped with Intel processors Before removing the USB board, follow these steps: 1. Shut down the computer. If you are unsure whether the computer is off or in Hibernation, turn the computer on, and then shut it down through the operating system. 2. Disconnect all external devices connected to the computer. 3. Disconnect the power from the computer by first unplugging the power cord from the AC outlet and then unplugging the AC Adapter from the computer. 94 Chapter 4 Removal and replacement procedures