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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.
August 28th, 2011 at 6:22 am
My wife’s CQ60-419WM was over heating. She wanted me to take it apart adn clean the dust out from around the fan. About halfway thru I felt it was too complicate and put it back together. It powered on but only half the keypad worked she said. When I took it apart again the power button cable came loose and the keyboard cable came out also. When I looked at the connecter under a magnifying glass the clips were up. I must have pulled on them too hard trying to reposition when putting it back together and pulled them out.
Now this is my problem. I put it all back together and it won’t power on at all. I get a light at the point where I plug the power cord into the DC jack but no lights on the front of the computer and nother when I touch the power button. I’ve checked several times and do not see an other loose wires. Any suggestions would be helpful.
August 24th, 2011 at 5:50 pm
Hi does anybody knows the exactly measures of the fan internal laptop for the Compaq Presario CQ50???
August 11th, 2011 at 12:04 pm
Many thanks my friend, I appreciate this alot. I followed your instructions, the pictures helped alot, took it apart and cleaned the fan, then did your instructions in reverse for the assembly. And the laptop works fine. Many-a-kudos to you.
August 10th, 2011 at 4:30 am
I hve 1 question, If I want to clean my fan inside laptop, I need to remove motherboard for Compaq Presario CQ40. But, I afraid if I remove motherboard, my notebook will not on back. Just to ask u, if I remove motherboard and plug it back will my notebook start as usually? Tq
July 25th, 2011 at 1:03 pm
Re: the replies @74-75 – problem: front edge LEDs not lighting up, battery not charging – I found the fix eventually: the blue flat cable in photo #17 was a bit loose, I applied a bit of band-aid over it and secured it into position and voila – problem fixed.
July 23rd, 2011 at 8:35 am
i can see 4 wires from screen to laptop body:
2 for wifi
1 for cam
1 for video
where is the one for microphone?
how is the microphone is connected?
July 8th, 2011 at 1:10 pm
hello quick question i took mine apart and replaced power switch , it worked until i rebooted now all i get is a loud screech when i press the on button a few ticking noises and then nothing
please help
thanks
damian
June 27th, 2011 at 3:30 pm
can you please put up pictures of how to put back all the parts of the compaq presario CQ50. I would really appreciate that very much.
June 17th, 2011 at 4:05 pm
I have a g50 I changed the motherboard but the screen remains black and all I I hear is the fan. I put an external monitor but it remains black as well. I need help. I see similar post with no responses. I need help please.
June 17th, 2011 at 9:32 am
So I cleaned my cooling fan with compressed air and now the fan no longer works. Did I do something wrong? Also can anyone recommend a good place to buy parts such as a cooling fan and DC jack harness? I have a compaq CQ50. thanks so much.