Hello, I'm using an onboard Nvidia RAID controller. When I changed to another OS (vista 64-bit), I installed the RAID-controller in BIOS and then the software from the CD that was included. I now get the status "degraded" on both disks. I don't notice any changes in performance but when i shut down the omputer, I get a bluescreen right before the power's cut. I'm kinda new to RAID, and I don't know how to get the disk healthy again.
Yes. After pressing F10 there should be an option to either repair or rebuild. The amount of time it will take varies.
This would allow you to repair without data loss, assuming all of your disks are fine.
You may want to look at tools like Hard Drive Sentinel in the future for hard drive monitoring in case one of your drives are bad.