I have integrated Intel 82577LM Gigabit Network Controller installed in my Dell Latitude E6510.
After installing updated driver from Intel and running hardware test it stopped working (displays "This device cannot start. (Code 10)" in driver details page).
Also it says that device is 82577LC (it used to be 82577LM).
I also tried deinstalling and reinstalling previous version of driver from Dell - nothing helps, even reinstall OS but it can not be solved.
Thank you for posing your query in Wired Ethernet Communities
With code 10 error, I'd suggest you to check with Dell support for further isolation. The error could be due to