HP Pavilion dv4-1120br
HP pavilion dv4-1213tx
HP PAVILION DV4-1541US
HP Pavilion dv4-1209tu
HP pavilion dv4-1229tx
HP Pavilion dv4-1425la
HP pavilion dv4-1420tx
HP pavilion dv4-1011tx
HP Pavilion DV4-1214LA
HP Pavilion dv4-1310tu
HP Pavilion dv4-1432tx
HP Pavilion dv4-1425tx
HP pavilion dv4-1431tx
HP pavilion dv4-1207tu
HP Pavilion dv4-1507tu
HP pavilion dv4-1002tx
HP Pavilion dv4-1465dx
HP Pavilion dv4-1214tx
HP Pavilion dv4-1305tx
HP Pavilion dv4-1444dx
1.Turn off your HP Pavilion dv4-1421tx laptop, disconnect the AC power cord and remove the battery cover and remove the battery.
2.Turn a laptop, from the bottom of the laptop disassembly screws, refer to your laptop's user manual position, and set them aside.
3.Remove the external components, including memory modules, wireless LAN and modem
4.Remove the keyboard assembly of all the screws, gently lift the keyboard assembly from the bottom, remove the keyboard. Unplug all cables and various internal components.
5.Disconnect any wires to the HP Pavilion dv4-1421tx motherboard. Unplug any cards, such as the video card, not directly built into the motherboard. You will have the opportunity to remove the motherboard screws, disconnect the cable to the power strip.
6.Remove the CPU, the CPU into a new HP Pavilion dv4-1421tx motherboard, re-assemble parts in reverse order.