I been looking everything ,making my own reseach , I though My CPU was damage (Nope never was the video card)I even wash the entire motherboard with gasoline ,DDR2s and video card, after testing and done Hundreds of things ,I when to my conclusion that everytime I move or touch the CPU ,and this mean to remove the heatsink,etc , the issues seems goes away for couple hours while Im using FSX ,I even in my last teaching VOR session with Brett Henderson, before we meet to our squedule I took off the CPU cleaned new grease of heatsink,NO IS NOT THE TEMPERATURE EITHER. We flew for a while the It frezzes again then it didn't anymore that day..
well I lift every single pin from the socket 775 with a powerful 20mm lens ,it must be like 500 contacts
Im not good taking shots,sorry about the blurry

then it began to work better but after 3 hours of flying it crash again , what I did was to twist the entire socket in a way the pusch the cpu against the socket harder, was balance and stronger,and risky too, at the same time ...

8-) this is the third day ,I Just was flying for about 6 hours (most of it in autopilot toward the north) this is the third day it hasn't crash yet , I think is that motheboard ,the socket and its pins made of a non elastic contact, a cheap metal made in malasia or I dont know..I hope wont crash anymore, at this moment in my country there aren't motherboard or anykind of computer supply