Remove the installation disc. Uninstall WinTV 8 and run HCWCLEAR. Shut down the PC. Make sure that the WinTV-HVR-1255 is securely seated in its slot. Reboot the PC with the WinTV-HVR-1255 installed. After a reboot you should see the Found New Hardware Wizard installation message, hit Cancel. Insert the installation disc and re-install the drivers and WinTV. [Edit]Clarification--The installation disc must be in the drive, but you will be installing WinTV and the drivers from your download.