There're two systems on my computer, Windows 10 and Ubuntu 16.
They both work fine besides one thing:
Once I entered Ubuntu, the ethernet card will no longer usable for Windows. To be precise, the card can be detected by Windows, but the DHCP always return the address 169.254.., Google says it's a common address for DHCP failure. Actually I have found a solution already: go to BIOS and disable the card after exit from Ubuntu, and then enable it again(PS: Doing this on Windows is useless, you must disable it on BIOS).
But doing such thing again and again is very annoying. So I ask you to help.
(Maybe Ubuntu write something in ethernet card so that Windows can not use it as normal? It's just my guess.)
