Many thanks for you replies guys,
Yes i have tried a new video card- infact as mentioned in my previous post I have tested both PCI-E and PCI video cards.
The PC died after i reset the CMOS- which leads me to believe it is a Currupt BIOS however CMOS was reset in the correct way. Also friend was complaining of BSOD's on a clean windows install before hand which broadens the possibilties.
Think my friend is just going to have to take the dive and buy a new LGA775 motherboard. Anyone know if DELL supplied parts will work with a branded motherbaord? (im sure they will, just wouln't like to get it wrong
Many thanks for your time,