As you are unable to connect your Windows 7 to any network (WiFi or Ethernet) you will need to obtain the drivers using an alternative method. Luckily, you have Ubuntu installed in a dual-boot configuration.
If your Ubuntu has Internet connectivity I would recommend that you:
- Download the Windows Ethernet (or WiFi) drivers for your laptop using Ubuntu.
- Use a memory stick to save the driver installation files
- Boot to Windows
- Install the network drivers
- Connect to your network and ensure Internet connectivity
- Run Windows Update to let it try to download drivers for your other devices.
If Windows Update cannot install drivers automatically then you will need to use the manufacturer media or download from their website.
For future readers: It is always useful to make a CD containing all the most important driver installation files for such devices as Ethernet and WiFi cards on your computer!