I have an IBM IntelliStation Z Pro (except model unknown) with a Rosewill RC-201 RAID controller. When trying to install Windows Server 2008 R2 x64 the installation begins, I select the drivers, and the install continues, however when it reboots as it normally would, it goes to the "Repair Windows Installation" screen and if one selects "Start Windows Normally" it simply reboots the machine.
This machine had Server 2008 R2 x64 on it previously, however after it was demoted as a Domain Controller it began having serious issues, so I opted to reinstall Windows.
The only difference between the original install and now is that the IDE DVD drive built into the machine won't boot from a disk anymore, so I had to hook up a SATA drive. This required me to enable the SATA controller on the board, which was previously disabled -- I also set the Native Mode as both Serial ATA and also tried Parallel ATA, if set to "auto" it doesn't work at all. I am curious if this has anything to do with it, however if I disable the SATA controller after install, it still fails to start, having the same issue as listed above. There were no other hardware changes.
Other than the start up repair screen, there are no errors, warnings, or anything else that would give a sign as to what to do. If one actually runs the repair, it does run and essentially says "if the repaired worked, Windows will boot fine" and it's the same issue.