Hello and welcome to the forum! It seems like you are facing an issue with the network adapter driver after installing Windows 7 RC1. Here are some steps you can take to troubleshoot and resolve the problem: 1. Check Device Manager: - Press Windows Key + R, type "devmgmt.msc" and hit Enter. - Look for any devices with a yellow exclamation mark. This indicates an issue with the driver. 2. Update Network Adapter Driver: - Right-click on the network adapter in Device Manager and select "Update Driver Software." - Choose to search automatically for updated driver software. This may help in finding a compatible driver. 3. Download Latest Driver: - Visit the website of your network adapter's manufacturer to download the latest driver compatible with Windows 7. - Install the driver manually by selecting the downloaded driver file through Device Manager. 4. Compatibility Mode: If the driver is not installing, you can try running the driver installer in compatibility mode for Vista: - Right-click the installer file. - Go to Properties > Compatibility tab. - Check the box "Run this program in compatibility mode for" and select Windows Vista. 5. Driver Signature Enforcement: - Disable driver signature enforcement temporarily to install the driver: - Restart your computer and press F8 before Windows loads. - Choose "Disable Driver Signature Enforcement" from the boot options. 6. Check Compatibility: - Ensure that the network adapter is compatible with Windows 7. Some older adapters may not have compatible drivers for newer OS versions. 7. Check Windows Update: - Sometimes, Windows Update might offer drivers for your hardware. Check for any optional updates related to the network adapter. 8. Restart Network Services: - Open Command Prompt as administrator and run the following commands: - netsh int ip reset - netsh winsock reset 9. Windows 7 Compatibility Center: - Check the Windows 7 Compatibility Center to verify if your network adapter is supported on Windows 7. Try these steps and see if they help in resolving the network adapter driver issue on Windows 7 RC1. Let me know if you need further assistance!