System boardNOTE: The system board spare part kit includes replacement thermal material.Description Spare part numberHP Pavilion TouchSmart 11 Notebook PC/ HP Pavilion 11 Notebook PCEquipped with an AMD A4-1250 processor, a graphics subsystem with UMA memory, for use oncomputers with Windows 8.1 Standard operating system744789-501Equipped with an AMD A6-1450 processor, a graphics subsystem with UMA memory, for use oncomputers with the Windows 8.1 Standard operating system744790-501HP 215 G1 Notebook PCEquipped with an AMD A4-1250 processor, a graphics subsystem with UMA memory, for use oncomputers with Windows 7 operating system744185-001Equipped with an AMD A4-1250 processor, a graphics subsystem with UMA memory, for use oncomputers with Windows 8.1 Standard operating system744185-501Equipped with an AMD A4-1250 processor, a graphics subsystem with UMA memory, for use oncomputers with Windows 8.1 Professional operating system744185-601Equipped with an AMD A6-1450 processor, a graphics subsystem with UMA memory, for use oncomputers with Windows 7 operating system744189-001Equipped with an AMD A6-1450 processor, a graphics subsystem with UMA memory, for use oncomputers with Windows 8.1 Standard operating system744189-501Equipped with an AMD A6-1450 processor, a graphics subsystem with UMA memory, for use oncomputers with Windows 8.1 Professional operating system744189-601Before removing the system board, follow these steps:1. Turn off the computer. If you are unsure whether the computer is off or in Hibernation, turn thecomputer on, and then shut it down through the operating system.2. Disconnect the power from the computer by unplugging the power cord from the computer.3. Disconnect all external devices from the computer.4. Remove the battery (see Battery on page 33), and then remove the following components:a. Service door (see Service door on page 34)b. Hard drive (see Hard drive on page 35)c. Display assembly (see Display assembly on page 46)d. Bottom cover (see Bottom cover on page 54)e. Media card reader board (see Media card reader board on page 60)f. Fan (see Fan on page 61)Component replacement procedures 63