hello Im haveing the very same issue with my Ventus mouse software i have widows 8 pro 64 bit ive tryed everything i can think of and nothing the software worked till after i installed my razor key pad than it stoped working the mouse and buttons work fine if any one can help i just want to speed up my mouse i play on a 52 inch lcd and it creeps across the screen if not looks like i wasted money and will buy another mouse but not this brand