I might have missed this somewhere so bare with me and I will tell you what I have done so far. I have win 7 x64, which I have installed on my old hp laptop with no problems whatsoever. I have tried several things to get it to work on my gigabyte ga-ma78gm-2sh motherboard. I am using an IDE drive for the os. the dvd and a storage drive is SATA. I have removed the tv tuner, every memory stick, db15 connection and sata in ide mode. the furtherest I get is "starting installation". I have even tried using an ide dvd or usb dvd to install this. I dont get near as far using the IDE dvd and the db15 monitor connection...it is really slow and wont get to install. DVD sata in IDE mode using HDMI output seems to get the furtherest. Am I missing anything? I might try next by removing all sata devices. anything else to try?