Bummer
Heh... that's one of the reasons I waited on modding my GF3..... too bad i didn't follow that same advise when I moded my second KT7A right out of the box..... opps
WEll I had to replace the ECS K7S5A with an ABIT KG7 (ECS 1.4Tbrid w/ DDR RAM is NOT stable at aLL!!!!)
BUT with the KG7 got my system up and running flawlessly and even OC the 1.4Tbird up to 1.705 !!! (155x11) Unfortunately old video card doesnt like 155FSB so now running @ 1.725 (150x11.5) until i get my GF3 back; then trying for 155 again!!!
Good luck though and I am not quite sure if the 4X mode problem is due to the mainboard.