I did post this in the software section but only got a couple of views! Basically I tried modifying my tcpip.sys in vista 64 for faster torrent connections. But beknown to me one of the vista updates prevents this from working and now vista wont boot at all! If someone could upload there original tcpip.sys from there vista 64 installation i would be super gratefull! It is located in the system32\drivers folder Many Thanks. PS. a 32bit version wont work.