now have a lot of users to reflect the installation of Win8 after the problem, the problem is very large network card driver caused, that how to do it, can only reinstall the NIC driver.
Operation Steps
1, on the desktop computer icon on the right mouse button "management."
2, in the left console tree, click Device Manager.
3, then go to the right window, expand the "network adapter", in the following "Marvell Yukon 88E8040 series PCI-E Fast Ethernet Controller" Item is my network adapter driver model.
4, and then uninstall the NIC driver.
5, the right mouse click "Marvell Yukon 88E8040 series PCI-E Fast Ethernet Controller", click the "Uninstall" item.
6, pop-up "Confirm to uninstall this device from the System" prompt window, point "OK", the network card model remember to find the relevant network card driver download down and install can be repaired.