two days ago I got a new computer with an 128 GB SSD.
The motherboard is ASUS P8Z77-V LX.
I tried to put my old 500gb HDD in aswell (after using dban to empty it). I can find it in BIOS, but not in Windows.
Not in Disk Management or Device Manager > Disk Drivers.
Why could this be? I've been trying with this for two days.