Find the Network Adapters category. You may see "Ethernet Controller" with a yellow exclamation mark under Other Devices. Right-click the device and select Update Driver Software. Choose Browse my computer for driver software.
Select the .inf file and click OK to force the installation. Troubleshooting Common Issues download driver sis 900 pci fast ethernet adapter windows 7
Limited Connectivity: If the driver installs but you have no internet, go to the Adapter Settings in the Network and Sharing Center. Right-click the SiS 900 adapter, select Properties > Configure > Advanced, and try setting the "Speed & Duplex" to "100 Mbps Half Duplex" instead of "Auto Negotiation." Find the Network Adapters category
Before downloading any files, you must know if you are running a 32-bit or 64-bit version of Windows 7. Click the Start button. Right-click on Computer and select Properties. Look under System type to see your architecture. Method 1: Use Windows Update (Recommended) Choose Browse my computer for driver software
Hardware Failure: Because SiS 900 cards are quite old, the hardware itself may be failing. If no drivers work, consider purchasing a cheap USB-to-Ethernet adapter, which is plug-and-play on Windows 7. Conclusion
How to Download and Install SiS 900 PCI Fast Ethernet Adapter Drivers for Windows 7