If the BIOS is no longer recognising the SATA drive, it seems doubtful that it was the reinstallation of windows that caused its disappearance, or indeed that windows is anything to do with it.

It's far more likely this has been caused by playing around with the BIOS. In order to maintain backwards compatibility BIOS's offer three basic SATA modes (with slightly different names, depending on the manufacturer). Different configurations allow compability modes where SATA drives may not actually be initialised, or enhnaced modes where an ACHI driver is required.

How is mass storage configured in the BIOS?