I am working on a computer which no longer boots into Windows 7 x64.
I delivered the machine to a client in what appeared to be perfect working order. After a week or two of use the machine began blue screening. I was not able to make it to the client's for another week. During this time the blue screens became more and more erratic (no consistent error code). Eventually the machine failed to boot, loading the startup repair screen. The startup repair fails with the error: "Auto Fail Over ... no os installed".
I have the system drive setup as two 600 GB drives in raid 0. I disabled the RAID and tested each drive individually. They both passed full read tests.
The board is a rampage iii extreme i am using the intel RAID controller and the array status shows up as Normal.
I then tested the RAM - it passed memtest repeatedly.
I am a bit stumped. I re-enabled the RAID and booted to the startup repair screen. When the startup repair screen appears it identifies the Windows 7 install and you can proceed. It always fails with the NO OS INSTALLED message.
In the command prompt I can navigate to the drive and view all the files so the filesystem appears okay. If I check BCDEdit I see the bootloader points to the correct drive location. If I try to manually rebuild the bootloader using bootrec I recieve the same error: No OS Installed.
Any help is greatly appreciated.