title: No bootable devices found Dell Optiolex 3070
body: <p>I was trying to install windows on this Dell Optilex 3070 but turned out to be a nightmare.</p>
  <p>No matter what I do it won't boot without a usb inserted.</p>
  <p>Please tell me from first to last step what should I do?</p>
  <p>What settings on rufus for making usb bootable</p>
  <p>What settings in boot sequence, advance boot options and secure boot.</p>
  <p>Thanks</p>