i removed the hard drive on my toshiba c55d-a5381 because it refused to boot from my windows 8 dvd, so i inserted it on anothe

Do you have the means to scan the drive with something like Seatools? If so, I would do that first.

Here is a link to the ISO with instructions.
http://www.seagate.com/support/downloads/item/seatools-dos-master/