I bought this laptop with vista installed. I then purchased the 7 64bit upgrade it stopped the hdmi stereo out so I got a 32bit win 7 and after getting used to it I was quite happy but it was not a legal copy. I have updated to 10 legal again now ,I have stopped all the microsoft spy ware and auto updates, removed the start icons so it is now like a xp and 7 start window It has finally settled down and is as stable as my win 7, 10 is a little faster browsing with firefox .I deleted the edge.exe file , i use spybot search and destroy with malwarebytes as protection and it works well