I have recovered RAID 0 before (it was a using a Promise Fast Track raid controller that comes default on Asus p4c800e motherboards).
Some things you need to know
The moment any issue happens with a disk, in a RAID 0 (stripe), the array is dropped from the raid controller to prevent further loss.
If you get your disk to spin, you can go into your RAID controller BIOS interface. There you will probably see it as Array Offline, with: disk 0 normal disk 1 failed ...or something similar...
You will also have some options in that menu: DELETE the array. This will be scarry, but deleting the array from the controller does not delete the data (unless you chose the option with words like format, or initialize in it - so don't do that).
CREATE new array using the same exact controller, and using the same exact stripe size. Do NOT chose any option to initialize or format. Assuming that your drives are in same position (same disk0/same disk1) and that you told the Raid controller the SAME stripe size, you're array will be back to normal and should be bootable to Windows.
Do NOT GUESS the stripe size. If you're not sure, there are some free or trial Raid recovery tools for windows that can give you a preview of different stripe sizes look like, without writing anything to any disk. You would need to do this before you CREATE the array. In order to run these tools, you might have to hook your 2 drives to normal SATA ports, because since there would be no valid Array, it would be inaccessible in Window. If you do disconnect the drives, do yourself a big favor and PHYSICALLY mark the position of each drive so that when you hook them up back to the RAID controller, you will maintain the same order (drive 0 / drive 1)
At last, you may be able to recover files that are LESS than stripe size, from only one drive. For example if your stripe size was 128KB, there will be plenty of text files, documents etc... that you will be able to recover from one drive, using one of the free RAID recovery tools.
Hope this will help somebody who will be looking for this issue... i realize the date of the op post is many years ago :)