why when after using advice from bethesda about loading files onto pc the second disc will not run?
has anyone got any advice or ideas on this
i have played Fallout3 for nearly two years now, while I have enjoyed the experience I bought the game of year edition so I could go and explore further!"

Have you tried booting the PC into safe mode and then trying to install the second disc? That is how I install it and it takes less then 5 minutes.