Fernando - im sorry for this very long post but I've gotten quite peeved at the problem i have and was wondering if you could help me..ive given as much info as possible here. I bought the following pc from mesh. http://www.meshcomputers.com/Default.aspx?...&KEY=224893 GTS QUAD PRo the mobo is an nForce650sli The problem? Basicaly, I had heard of a performance boost in fps for games under xp over vista. i'm personally not convinced that DX10 or vista are doing anything special at all, especially when people came out with the dx9->10 performance hacks for the crysis demo. So, decided to install XP Pro (with SP2), initially as a dual boot. Couldnt for the life of me figure out how to make the xp installer recognise the partition i had made for it, so threw caution to the wind and formatted the drive todo a clean install (ie. over vista...obviously after collecting important files). Right, so vista gone, XP installer copied its files over, then system restarted (at the point which its meanta restart into the GUI portion of the installation) - but i got an error message "disk read error". Tried the install a few more times, same error message comes up. i read around and heard somewhere that vista changes the MBR or something like that, so i went into repair mode in the XP install and typed in "fixMBR". Afte restarting the pc, the error message that came up was "invalid partition table". Right so fiddled about with more installs, this time streaming in nForce SATARAID drivers with the Xp install disk (as per the instructions). Now this time, after i've gone through the first run and it goes to restart, instead of an error message the screen is black, and the PC restarts itself. If i leave it on unattended it will do this in an infinite loop. I used nLite 1.4 to stream in drivers onto my copy of XPpro - specific drivers were the 8.43_nforce_650i_winxp32 drivers, in the SATARAID folder. You mentioned in the tutorial not to d the IDE bit, ie. its unecessary? I've gone through around 5/6 disks trying to get the streaming right and no dice...i'm not sure what to do, it really shouldn't be this complicated should it? Thankyou very much for your time