Go get a bootable standalone CD/USB of GPARTED and use that to see if the HDD is seen as well as remove any partitions you see in GPARTED. What GPARTED is, how to make and use is all over the web.
I have an HP ProBook 450 g1 laptop that I am trying to install Windows 8 on. I have Windows 8 all ready to go on a flash drive, but I cannot install it because it cannot see my hard drive. I previously did an HP Secure Erase before this thinking it would only clean my computer, not remove everything. Does anyone know what I can do? Thank you!