New
#11
Whatever drives were running at the time of hacking are useless until cleansed.
If they are conventional hard drives,then ---DBAN---is a good tool to do it.
You will need access to a clean drive to download DBAN and install it to a usb.
There is an informative article on how to proceed on ---lifewire.com---
Using another computer is advisable,if at all possible.