No internet connection

[ehamblen]

I have a Toshiba laptop - Satellite L755D S7332    Es5.0, serial# B559, Part# -00D00Pwith Windows 7 as the OS.
I had a worm and was forced to format the D and reinstall the OS (Win 7). Since re-installing the OS I have no internet connection. When I go to the Device Manager it shows that (4) items have exclamation marks beside them All f them are in "Other Devices" and are named as follows:
Ethernet Controller
Network Controller
SM Bus Controller
and
Unknown Device.
I have went to Toshiba's web site and d/l what I think is the right driver for the computer. I installed the driver, but still no connection!
When I try to update the driver from the computer a screen appears that states, Windows could not find driver software for this device.   
Can anyone please advise me what actions I can take to try to correct this problem?
Thank You

[jason2074]

When I try to update the driver from the computer

Please install the downloaded and correct drivers obtain from the manufacturing support site and not from the device manager.

[hartbeatmr]

Good morning ahamblen and welcome to CH

     Here is the link for your laptop http://www.csd.toshiba.com/cgi-bin/tais/support/jsp/modelContent.jsp?ct=DL&os=&category=&moid=3132759&rpn=PSK40U&modelFilter=L775D-S7332&selCategory=2756709&selFamily=1073768663

     just pick you windows version and bit version either 32 or 64 then download
your wireless card drivers this maybe a realtek unit, onboard network card this maybe a realtek lan, smbus is part of the video drivers this maybe the AMD display driver and the unknown device maybe a card reader realtek card reader or a Bluetooth driver "Bluetooth stack"

Hope this helps you please let us know how you make out, Mike