I also have this issue.I am however on a Lenovo w540 running windows 7 sp1.
When I hibernate the network card stops working. I have the latest drivers so I am on 7.1.0.19 now. I used SFC to check bad files. There are no file issues. So since it worked a one point before upgrading I it is most likely that Intel has put out a faulty driver.
The work around that I uses is to go to the control panel and disable/enable the network card. I recommend not using the faulty drivers from Intel until this issues is resolved that is if you like to use the hibernate feature on your laptop.
