new motherboard - hdd screw up

[jbedford]

Hi all,

My first time posting here and I'm hoping someone can sort this out. My motherboard needed a bios update so I went ahead and flashed it using MSI's EZFlash utility which crashed and then proceeded to make my system unstable. The gents at the local computer store said that I needed to now replace the board. Fine. I bought a new ASUS Z97, but after doing so, two of my physical internal drives that USED to show as 750GB each, were now showing as a RAID array.

The bios shows that there are indeed two physical 750GB drives, but the guys at the shop said that they must've been in a RAID config. What? I would have noticed a single 1.5TB drive, thanks. Even stranger is that, despite bios 'seeing' the drives, Windows 7 (running off a ssd) reports one 567GB drive and the other, well, it's showing as 0 bytes.

What the heck happened??

 

[Samwell9854]

When you say that Windows 7 reports HDDs of 567GB and 0B, is this from the Explorer or Disk Management?
If the BIOS update crashed, the system restarted and tried to boot with that corrupted BIOS, considering it can change itself the behavior of the drives from IDE to AHCI or RAID (and possibly create/delete volumes), you might have experienced unexpected behavior from an unstable system.
If there are some data to recover, you may search online for programs able to recover partitions on a drive, or the files themselves (this process might take a really long time as it needs to scan the whole drive, byte per byte).
Otherwise, you may want to try to run DISKPART, "clean" the supposed 0B drive and recreate the needed volumes.