I have a Toshiba Satellite c55-a5242 Laptop running Windows 8. I had an Asus A53U laptop running well a while back until it was dropped and the hard drive crapped out. I have been attempting to view the state of the new hard drive (Western Digital Blue 750GB LCPX) and possibly install Windows 7 back onto this new drive via my Toshiba. Using a hard drive caddy, nothing appears on My Computer, nor Computer/Disk Management. The hard drive spins up and sounds like it is operating w/o any strange noises, but I can't seem to find it located on my computer as being connected to my laptop. Please help, any suggestions are welcome.