COMPAQ Presario CQ40-519AU
COMPAQ Presario CQ40-311AU
COMPAQ Presario CQ40-401AU
COMPAQ Presario CQ40-420AU
COMPAQ Presario CQ40-518AU
COMPAQ Presario CQ40-517AU
COMPAQ Presario CQ40-319AU
COMPAQ Presario CQ40-316AU
COMPAQ Presario CQ40-421AU
COMPAQ Presario CQ40-501AU
COMPAQ Presario CQ40-406AU
COMPAQ Presario CQ40-318AU
COMPAQ Presario CQ40-509AU
COMPAQ Presario CQ40-312AU
COMPAQ Presario CQ40-403AU
COMPAQ Presario CQ40-315AU
COMPAQ Presario CQ40-307AU
COMPAQ Presario CQ40-301AU
COMPAQ Presario CQ40-419AU
COMPAQ Presario CQ40-507AU
1.Turn off your COMPAQ Presario CQ40-521AU 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 COMPAQ Presario CQ40-521AU 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 COMPAQ Presario CQ40-521AU motherboard, re-assemble parts in reverse order.