Hi,
That doesn't seem normal for a Factory Reset to take that long. Please just redo the Factory Reset and if the same problem will persist I would suggest getting a new set of Factory Reset disc from Toshiba.
Here's where you can order online a Factory reset disc.
https/support.toshiba.com/repair
But if you've already tried running a factory reset disc and you got the same problem then the HDD should be replaced already since it's the one who's causing the lock up when installing Windows.