So, after building I updated the bios to the most recent version sucessfully.
I then began to install Windows 7 x64 which after completeing the inital install and restarting, was failing to boot into windows, I removed a stick of Ram and this seemed to fix the issue. Windows installed and all seemed fine, everything was working as normal.
That was untill I ran windows update, after updating and allowing the restart, the computer failed to boot windows, I tried multiple variations of Ram from 1 stick to all 3, changing DIMM sockets. Eventually I gave up and decided to format and reinstall all over again.
But just as in my first install I cant boot into windows again after the first restart, and this time removing Ram etc. has no effect. The computer starts, and after the bios goes into the windows load splash screen and then reboots the computer in an endless loop. If I boot in safe mode, I can (most of the time, but not always) get passed the screen but receive a message saying instalation cant continue in safe mode.
I can sit in bios all day with no issues, and the temperatures are at 30 degrees on the CPU. I have also ran a Memtest86 with 0 errors. I can also run Ubuntu totally fine with no issues.
This has lead me to belive this may be some sort of issue with a Bios settings and windows not being compatible (they are currently all at default as im a total noob when it comes to these things)
The disc for windows is fine, as I have used it previously on my other computer with no issues.
One other thing that may or may not be relevant is that it seems that one of my DIMM slots is faulty (unknown if this was damaged during my instilation or just faulty from the manufacturer), as the second slot for the triple channel memory does not work. Instead I have the board working as dual channel with 2 sticks in slots 1 and 3, and another in the second set 1.
I'm a total loss for what to do, and endless internet searching has not gave me any answers.
I have been having the exact same problem, this is the second asus p6x58 D-E i have bought and both did same thing. 1 i purchased back in the states and 1 I purchased here in korea. second i-7 960 i have bought returned the old one to a friend who has an electronics store and he gave me a new still in sealed package. new PSU cause the old one did have a fault. new ram many different types and new HDD Basically rebuilt entire computer. still have same issue as you