The laptop was running slow and I decided it was time to clean things up and get her running like new again. Backed up everything and wiped the drive using KillDisk.
Three and a half hours later when the process was done I popped in my Wndows 7 OEM disc only to be greeted with the dreaded Unmountable Boot Volume on that pretty blue screen
. Tried several times but it's the same thing each time.
What did I screw up? Appreciate any help. Thank you!
(Dell XPS 15, Western Digital 750GB hard drive)