Thank you for responding. Yes, I have successfully installed from a USB flash drive before. Sorry, if I was unclear above, I have used Window's Media creation Tool and downloaded Windows Installer on flash drive. After pushing f12 and entering One time boot menu and selected boot from flash drive, menu comes up but is empty of information due to not reading flash drive from USB port. FOUND Solution: Went to f2 bios setup: Power management: enabled USB wake support Flash drive became recognized. Thanks  
Inspiron 15 7579 computer helix ssd hard drive 308 256k Hard drive failed, installed replacement. Installed windows boot software on usb drive and connected When booting up computer I get 0xc000000f windows not installed  f2 setting/system configuration/enabled usb boot secure boot enabled   How do I get the computer to recognize the USB to reinstall windows? Thanks in advance for any help.  
New hard drive