Hey everyone, I'm new here but I've been using RivaTuner for a few years. I previously had it working great in Windows 7 - I mainly used it for HW monitoring but I'm getting the error message that "RivaTuner64.sys is missing ..." on startup each time though I installed it properly and I've given it administrative privileges. I am also running in "Test mode" so unsigned drivers can be installed. I really enjoy using this piece of software as it's the most accurate, customisable and alternatives such as Afterburner aren't as complete. Has anyone got it working on Windows 8 or know how? Cheers