Is Disk0 your RAID containing both of the RAIDed HD's? If so it seems your 100mb Sys Reserved partition has been emptied. See if you can see any content by rightclick>Explore in PW CD. Either way, mark it Active to run Startup Repair 3 times to see if it will rebuild the partition and become the System partition again. If not, try activating Windows 7 again, run the Repairs to see if it will accept the boot files to claim System.
We see so many problems here with RAID that I wouldn't advise using RAID with Windows 7 unless you are a RAID expert or else one comes along to advise you. Most people here do not use RAID or advise doing so in Windows 7, which comes with built-in drive imaging that provides true redundancy that doesn't lose both drives' content if one dies.
If you're not able to reconstruct the RAID as it was configured to see if Windows 7 is reparable or your data retrievable, then I would Explore the remaining partitions which shows content to see if your files might still be intact: Copy & Paste - in Windows Recovery Console
You can also run free Recuva to try to recover data in pieces and piece it back together.
Then I would wipe the HD to clean reinstall Windows 7 with all other HD's unplugged. SSD / HDD : Optimize for Windows Reinstallation Clean Install Windows 7 Clean Install with a Upgrade Windows 7 Version
Afterwards plug in the other HD(s) to use as data drive or storage. You can also wipe them using Diskpart from Windows 7 elevated Command Line.
Some tips to get a purrfect reinstall based on hundreds done here: re-install windows 7