You can also try searching for the latest driver (188.8.131.52)
for Windows 7 in Google.
If you know the download link for the latest driver for Windows 7,
please register and submit it to help other users.
Marvell Yukon 88E8056 PCI-E Gigabit Ethernet Controller driver is the solution for your trouble. This driver will install your device successfully on the required operating systems. It's a must have driver because without it the device will remain unrecognised and unfunctional.