DISKPART Clean All taking too long

Hi, i'm trying to install Windows 7 Ultimate x86 on an HP 430 laptop.
The Windows installer can't find the laptop's hard drive so (as a solution I found while googling) I tried DISKPART's clean and clean all functions.
The clean function finished quickly but the clean all has been going on for more than 24 hours now. :shock:
Is it supposed to take this long?
The laptop has a ~500gb hard drive and an i3 processor.

Takes about 300gb a hour.


I would Check the hard drive with the manufacturer's diagnostic tools.
Hard Drive Diagnostics Tools and Utilities (Storage) - TACKtech Corp.
HD Diagnostic