Hi years ago I built my own PC based on Asus M2nSli delux with a Athlon 64bit processor moved to a boring laptop and gave my grandson my pc he's 10 about a year ago. He upgraded it to win 10 and it ran ok for a bit kept blue screening then it died. as iam retired he has my laptop I have the broke m/c. So I thought why not stripped it down completely everything out and did some intensive deep cleaning (air line) and stiff brush etc. built a basic m/c mobo i stick mem disc nothing else up it popped win 10 bouncing along left it to play for a week no problems. Started putting back all the other bits and bobs. Problems started again win 10 would not start. It posted and left a cursor flashing on the screen ? disc sata cable sata output from the mobbo ? messed about a bit and realised it never returned a message ie insert sys disc it just sat there flashing. Odd, checked the boot priority normal, HD the cd drive the removable. I dont know why but I took out a usb stick used as extended memory. Up.win 10 popped so it was looking at the USB first I have no Idea why as the boot order was correct. I have run it for a month thrown everything at it and no problems no blues and average performance. Non of the asus utilities run 10 rejects them but the Microsoft stuff works fine. So as its a bit of a plodder I am trying to find the optimum processor upgrade for the M2Nsli Delux not looking for grief level just the best fastest I can get, can any of you cool people help keep it simple I am over 70 cheers must go surfing this pm. nigs