I reinstalled Windows 7 Home Premium on my Toshiba Satellite C655-S5312. I used an ISO file to replace the original Win 7 due to a virus I couldn't remove. Now I can't access the internet and I receive a message indicating no Network Controller exists. I need a driver(?) to install for the Network Controller, Ethernet Controller, PCI Simple Communications Controller and SM Bus Controller. I looked on the Toshiba site and can't identify the drivers I need.