Just got a new computer loaded with WIN 10. Works wonderfully fast/efficiently. Downloaded ProntoProNg software without problem, got the interface program, but found it would not recognize the 7500. Wish I had read these posts---would have saved some agonizing and wasted time/effort. Glad I still have the old computer, which has a bunch of legacy programs that won't run on Win 10. I had these programs running on Win 7 with no problem. I understand that difficulty is that Win 10 is 64 bit, and these programs designed for 32 bit. Suggestions?