I have an E7440 on a E-port dock that when connected does not charge. When I go to the Bios (which I updated to the latest available) under battery information it shows Unknown Adapter when connected to the dock. If I pull the same AC adapter out of the dock and plug it into the laptop it shows 130W. Anyone have any ideas what it could be? Like I said this is the latest bios. I have tried a known good dock and have the same issue. I tried blowing out the connectors with air. Tried different wall outlets & power strips. Running out of ideas to try.
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