It seems like you're encountering difficulties installing Windows 7 on your RAID 0 configuration with two SATA hard drives acting as one on an ASUS P5N-E SLI motherboard. Here are some steps you can take to troubleshoot and potentially resolve this issue: 1. Check RAID Configuration in BIOS: - Make sure that RAID is enabled in the BIOS settings. - Ensure that the SATA ports for your hard drives are set to RAID mode. 2. Load RAID Drivers During Windows Installation: - When you're prompted to select a drive to install Windows 7 on, there should be an option to load drivers. - Download the specific RAID drivers for your motherboard from the ASUS website onto a USB drive. - During the Windows installation process, you can then load these RAID drivers from the USB drive to enable detection of your RAID array. 3. Verify RAID Array: - Check the RAID configuration utility to ensure that the array is properly configured. - Confirm that both hard drives are recognized by the RAID controller. 4. Check for Compatibility: - Ensure that the RAID drivers you are using are compatible with Windows 7. - Double-check that the motherboard supports Windows 7 on the RAID configuration you're attempting to use. 5. Disconnect Other Drives: - Disconnect any other drives connected to the system during the Windows installation process to avoid confusion. 6. Boot Order: - Verify that the boot order in the BIOS is set to prioritize the RAID configuration where you're installing Windows 7. 7. RAID Controller Settings: - Consult the motherboard manual to ensure you are configuring the RAID settings correctly. 8. Check for Firmware Updates: - Check if there are any BIOS or firmware updates available for your motherboard that might address compatibility issues. By following these steps, you should be able to troubleshoot the issue and successfully install Windows 7 on your RAID 0 configuration. Let me know if you encounter any specific challenges during any of these steps, so I can assist you further.