Well, i just installed the MSDN version of the RTM build 7600 of Windows 7. and everything went very smooth. its just that, i think it is conflicting with something on my computer. I shut it down the first time i installed and restarted. it booted and i was able to use it. but just a few hours ago, everything just got reallly slow and my comp froze completely. so i manually turned it off. now, whenever i try to start, it either sticks at the POST screen, turns off, then boots past, or it goes to Starting Up, and then freezes just as the two first colors come out of black. so if i restart, same thing happens...tried safe mode, it got to the last driver it always gets to, but it never went on. tried "Last known good config" to no avail. also, as a side note, when the comp freezes at starting up, it usually will like skip to a later part of the colors coming out, and then freeze once more at that spot...im not sure what this issue is or why it is happening from the new installation or just because something went wrong. Btw, I upgraded from RC.