Boot from pendrive CD DVD bios Dell Inspiron 15 5000 series - YouTube
Solved: Dell Inspiron 15 7567 won't boot from USB - Dell Community
No bootable devices found in Inspiron 15 3000 series - Dell Community
Dell laptop UEFI TO LEGACY BOOT CHANGE MODEL 15-3000 all new model - YouTube
Barry Altland on Twitter: "Maddening. Wasted an entire day trying to get my @Dell Inspiron 15 3000 Series laptop to start. Already replaced the adapter cable and the CMOS battery. Dreaded five