I have resolved my problem. Updating the driver in Device Manager with the Broadcom Gigabit driver 57xx I obtained from the Broadcom website loaded in all the drivers for the ethernet chipset. Seamless operation. The Dell files do not work and are a big waste of time.
I have downloaded the correct driver according to the service tag number for this machine I have and I am still unable to clear the yellow question mark in the Device Manager. No ethernet. Is there ANY other fix available for this?? I bought this machine used, thinking this would be an easy problem to fix, but so far that hasn't been the case. Thanks in advance.
D620 Broadcom network driver issue