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In the following guide I remove the motherboard from a Compaq Presario CQ50 laptop. Also this guide should work for Compaq Presario CQ 60/CQ70 and HP G50/G60/G70 laptops.
If you need replacement parts, you can find them here. Just search by the part name and laptop model.
Start laptop disassembly with removing the battery.
STEP 1.
Remove memory, hard drive and wireless card covers.
STEP 2.
Remove three screws securing the hard drive assembly.
Slide the hard drive assembly to the right, disconnect it from the motherboard and remove from the laptop.
STEP 3.
Remove both memory modules.
Disconnect two antenna cables from the wireless card. Remove two screws and remove the wireless card from the laptop.
STEP 4.
Remove one screw securing the DVD drive.
Pull the DVD drive from the laptop.
STEP 5.
Remove all screws from the bottom of the laptop.
Disconnect the CMOS battery cable from the motherboard.
STEP 6.
Carefully lift up the keyboard as it shown on the picture below.
STEP 7.
Access the keyboard cable connector underneath the keyboard.
Unlock the connector before removing the keyboard.
In order to unlock the connector you’ll have to move the locking clip (white) about 2-3 millimeters towards the LCD screen.
The locking clip must stat attached to the connector base (dark brown) as it shown on the picture below.
Now you can release the cable and remove the keyboard.
STEP 8.
Unlock the power button cable connector.
On the following picture you can see the connector in the unlocked state.
Now you can remove the power button board cable from the connector.
STEP 9.
Remove the plastic cover.
STEP 10.
Disconnect the video cable connector from the motherboard.
Disconnect the webcam cable.
Pull the wireless card antenna cable through the opening in the top cover.
STEP 11.
Remove screws securing the display hinges.
STEP 12.
Remove the display assembly from the laptop.
In the next post I explain how to remove the LCD screen, inverter board and hinges from the display assembly in HP G50/G60/G70 laptops. It’s similar for Compaq Presario CQ50/CQ60/CQ70 laptops.
STEP 13.
Disconnect the touch pad cable from the motherboard.
Remove screws securing the top cover assembly.
STEP 14.
Start separating the top cover assembly from the laptop base.
You can use a guitar pick in order to split the laptop case.
STEP 15.
The top cover assembly has been removed.
STEP 16.
Remove one screw securing the left speaker.
Remove the left speaker from the base.
STEP 17.
Remove four screws securing the motherboard.
Disconnect four cables from the motherboard.
STEP 18.
Remove the motherboard from the laptop base.
STEP 19.
Disconnect the cooling fan cable from the motherboard.
STEP 20.
Loosen four screws securing the cooling fan assembly.
STEP 21.
Remove the cooling fan assembly from the laptop.
STEP 22.
In this model the power jack is not soldered to the motherboard.
You can unplug the power jack cable from the motherboard and replace it with a new DC jack harness if it’s bad.
December 12th, 2011 at 12:26 pm
Never mind think I was having a blonde kinda day lol Got it
December 12th, 2011 at 11:12 am
where do you hook up the wifi antenna to the mother board on a compaq cq50 lap top
December 7th, 2011 at 6:34 am
When I was removing the wiring harness from the motherboard on a CQ50, I broke the plastic retainer. I see the order of the wires, red then black then yellow, and put them back in that way without the harness. The problem is, now the fan will not work at all. I am sure a connection is being made and the order of the wires is matching up with the pictures, just no fan. Any ideas. I appreciate any help.
November 30th, 2011 at 2:59 pm
The stupid webcam cable sucks! It just shredded when I was trying to remove it from the motherboard. Someone should go take a crap on the front desk of HP/Compaq’s offices.
November 30th, 2011 at 1:57 pm
helle plz can u answer me i have my pc hp wont boot … mean like is dead i want know if its the motherboard is bokin or no thanks to answer me
November 24th, 2011 at 2:22 pm
@ Harv,
I believe a laptop should turn on even if the CMOS battery is dead or missing.
It will not save time and date settings but should turn on just fine.
November 21st, 2011 at 9:05 am
Hi,
Can the Laptop turn on If the CMOS Battery is dead? and can be turned on if the CMOS Battery has low voltage like 0.44V ?
Thank you..
November 21st, 2011 at 5:39 am
Thank you so much sir!
This helped me enormously to clean the cpu fan.
November 10th, 2011 at 6:58 pm
Tariq,
I have no idea. I don’t fix motherboards on component level.
November 10th, 2011 at 3:50 pm
Hi Sir,
The DC jack in Laptop Compaq CQ50 Presario, has six poles in colors (Black, Orange, Yellow, Black, Red, Red). So please what is the voltage power of each pole when the input power is 220V AC..
Thank you..