How to Repair the Power Button Board on a Compaq Presario CQ50
If the power button board on your Compaq Presario CQ50 notebook computer malfunctions, you may not be able to turn on the computer after it turns off. Laptops turn off for a variety of reasons, including hibernation modes kicking in and restarting after operating system updates, so the chances are high that you won't be able to watch the computer all the time to keep it from shutting down. Fixing the problem isn't very difficult at all, as you only have to remove the keyboard and the keyboard cover to repair the power button board.
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Instructions
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1
Shut down the computer and take off all the peripheral components on the computer, including cables and USB devices.
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2
Turn the computer base-side-up and locate the battery pack on the hinge-side of the base. Press the battery pack release lever and pull the battery pack out of its compartment.
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3
Extract the three screws along the front-most edge of the battery compartment, one screw from the rear-left and rear-right corners of the base and two from the middle of the battery compartment.
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4
Turn the computer top-side-up and open the computer so that the back of the display lays flat against your work space.
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5
Release the tabs on the sides of the keyboard and lift the top of it enough to gain access to the ribbon cable that connects it to the motherboard. Disconnect the ribbon cable and remove the keyboard from the computer.
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6
Lift the keyboard cover up, disconnect the power button board cable underneath it from the motherboard and remove the keyboard cover from the computer.
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7
Turn the keyboard cover upside-down and extract the two screws from the power button board.
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8
Remove the old power button board from the keyboard cover, place the new power button board on the keyboard cover and secure it with the two screws.
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9
Connect the power button board cable and replace the keyboard cover.
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10
Connect the keyboard cable and replace the keyboard.
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11
Turn the computer base-side-up and insert the screws you removed from the rear-left and rear-right corners of the base and inside the battery pack compartment.
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12
Replace the battery pack, turn the computer top-side-up and connect all the peripheral components you removed in Step 1. Now the power button board is repaired.
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References
- Photo Credit Stockbyte/Stockbyte/Getty Images
