Having problems with your Dell Latitude C840 Notebook ?
No sound on c840? - Dell Latitude C840 Notebook
I had the same problem, no sound, plus my touch pad stopped working. I took the keyboard off by removing the 4 screws on the back marked with the K inside the circle, then with a small flat head screw driver I pried up on the "ENTER" key and the entire keyboard lifted up. Under the keyboard you'll see a small ribbon cable with a white connector on it, make sure it's attached to the motherboard. Mine wasn't, after plugging it back in everything worked like new!
Install the latest driver from dell
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Repair Help & Product Troubleshooting for Dell Latitude C840 Notebook
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No sound on my dell latitude c840
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No sound on c840? - Dell Latitude C840 Notebook
I had the same problem, no sound, plus my touch pad stopped working. I took the keyboard off by removing the 4 screws on the back marked with the K inside the circle, then with a small flat head screw driver I pried up on the "ENTER" key and the enti ... Dell Latitude C840 Notebook
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... Dell Latitude D620 Notebook
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