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
\015\012ver 18.104.22.16859 A09
\015\012ver 22.214.171.12459 A09
Repair Help & Product Troubleshooting for Dell Latitude C840 Notebook
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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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