Hi, I have a Dell Inspiron 5423 with Windows 8.0. I want to reinstall from scratch for security reasons. I tried to format the drive via Control Panel -> Administrative Tools -> computer management -> disk management, but when I clicked on the drive, the option to format it was grayed out. I tried reinstalling my system disk with the Keep Nothing option, but I still see software packages on there from Adobe, Brother, Joomla, and some others. What should I do next to wipe it as clean as possible? THANKS for any help!