CompTIA A+ 220-901

Answer: B - A good first troubleshooting step if your RAID array suddenly stops working is to check and reseat all internal connections.

Key Takeaway: When something happens suddenly without any cause, it usually means that either something is loose or that something has broken. In this case, the best first step is to check all the internal connections and reseat them. Reinstalling the RAID array drivers may become necessary if something very wrong has happened, and replacing the RAID array may be necessary if the hardware has suddenly gone faulty. Disabling the onboard RAID array would be required if you were adding an additional hardware RAID array and the motherboard already had the capabilities for RAID.