COMPAQ Presario CQ40-420AU Laptop Motherboard is Refurbished. the motherboard as a replacement for your compaq laptop, this compaq presario cq40-420au motherboard replacement is individually tested, it was designed to meet or exceed OEM specifications and is 100-percent compatible to the original compaq presario cq40-420au system board.
1. Remove the power supply and battery
Before the disassemble of the machine, remove the power supply and battery, and then press the power button, release the motherboard chip in the residual power.
2. Prepare a clean bowl or a small box
Clean small bowl or small box is used to store the screws, because the laptop has a lot of small screws, after the removal into a small bowl or small box to prevent the loss, in this process, but also remember, Remove the screws in that place and prevent missing when installed. It is best to take a few small bowl or a small box, the unloaded screws to sort, so when installed in the easier to know which screw in which position.
3. Remove the accessible components
Now a lot of notebooks are not completely fixed with screws, and some places are directly stuck together, for this situation, you'll need a prying tool.
4. Small brush and blower
Be sure to prepare a small brush and blower, because these two are indispensable in the process of cleaning up, and can not be replaced by a small brush on the COMPAQ Presario CQ40-420AU motherboard and COMPAQ Presario CQ40-420AU fan to clean, be sure to gently brush, be careful some small chips The air cleaner clears the dust in the gap.
