serial ch0 master no device serial ch1 master no device when turning pc on. Tried fresh install of XP home edition sp1 recovery disk. After countless attempts to install it again and it turning itself off - furthest I get now is 34 mins left WINDOWS LOGO TESTING BOX APPEARS saying the Software for VIA BUS MASTER IDE CONTROLLER may impair its performance, choose Y or N. Whichever I choose the mouse arrow vanishes and another box comes up for the Software not passing the logo test for Standard dual channel pci ide controller. At that stage I cannot make a choice and have to switch off. Help! What can I do!