So. Weird problem.

[WelshBloke]

I have a 1tb HDD that I can see in a usb cradle but if I plug it into a sata port I can't see it in Windows device manager or Disk management. It shows up in the BIOS as connected and exhibits the same behaviour across several sata ports.
Crystal disk info gives it a good report through USB but I'm not sure that is trust it for any important data now but I'd still like to know what's going on.
Any ideas AT?