I recently bought a pre owned Sony Vaio laptop that came with Windows 10 (non activated), and 2 x 256GB SSD raid. All seemed well, but I couldn't detect the SSD in Device Manager or Disk Management, only in BIOS. The sellers advice was then to delete and recreate the raid in bios, which I did. Now when I turn on the laptop, I'm greeted with "Operating system not found".
Luckily I don't need to recover any important files, except to get Windows restored.
I don't have an original restore/boot disk. What are my options?