Downgraded to Windows 7 and my Internet has gone

Right, I have a Toshiba Satellite C660 with serial-Yb070677K. My compute came with Windows 7 home premium but I upgraded it to Windows 8 to see if I preferred it. I didn't so downgraded back to 7. Once logged on after the downgrade I notice a red X on the internet icon on my taskbar. I run the troubleshooter and get told 'windows did not detect a properly installed network adapter. If you have a network adapter, you will need to reinstall the driver' After that I go to my device manger to try to update (failed) and it states that not installed (Code 28) are 'Ethernet Controller' 'Network Controller' and 'PCI Simple Communications Controller' What do I do to fix this? I can only access internet via my iphone.

Its simple buddy try to install all drivers mainly.lan drivers and also take precautions that you have no problem through the server. If want drivers for your pc then immediately go on to toshiba website. I think this is the website where you can get drivers for your laptop…
http://www.drivertoshiba.com/satellite-drivers/toshiba-satellite-c660-windows-7-drivers.html

A disk with hardware drivers should have come with the computer when you bought it. You need to install all of these for the two devices to work.

1st option)
Make sure you have installed the latest driver version of your Network adapter. (go to your network adapter manufacture website to download the most recent version)
2nd option)
go to device manager (windows key + r type devmgmt.msc) select your network adapter and uninstall the driver then restart the computer and let it reinstall the appropriate driver.
3rd option)
go to Network and sharing center and make sure that the Network adapter is properly configured

Windows8 - Windows7 = Internet;

Windows( 8 - 7 ) Internet;

Windows 1 = Internet;

Windows = Internet;

Noble prize?