[NAME] , why not just use the built-in Dell data wipe function?  It will restore your drives to factory settings and restore the performance as well.
I have a Dell Inspiron 15 3567 that I want to wipe all data from.  I purchased a new laptop in Sept and have not used the Inspiron since that time.  When I turned on the Inspiron, there were updates that needed to be installed.  The laptop runs extremely slow during updates.  The laptop froze while installing one update.  I wanted to download dBan data removal software but there is an issue with Windows not able to read a CDW disc in the drive.  Because the laptop is so slow, I cannot even open a browser to download the software.   From the new laptop, I downloaded dBan onto a USB drive and tried to change the Boot sequence on the Inspiron to boot from the USB drive.  When I finally got the laptop to boot from the USB drive, I ran dBan, the dBan screen with the instructions appeared, but whatever option I select, there is an error message saying no file or directory was found. Now, I changed the Boot sequence back to where it was, to boot from the hard drive and load Windows.  When I get to where I enter my PIN, I get the message saying something happened and my PIN is not available.  I need to set up my PIN again.  When I try to do that, it is very slow.  It is just spinning. Right now, I ready to take a hammer to the laptop.  Is there anything I can do to get Windows to load without a PIN?
Inspiron 15 3567 restore to factory settings