| Symptom | Probable Cause | Fix | | :--- | :--- | :--- | | "No bootable device found" | USB formatted as NTFS on UEFI system | Reformat to FAT32 or use Rufus in DD mode | | Boots to black screen, Caps Lock blinking | Corrupted DLC recovery image | Re-download Recovery.cap; ensure file size matches Dell's manifest | | DLC loads but cannot see internal drive | Missing Intel RST (VMD) driver | Inject the F6 floppy driver (IRST) into WinPE boot.wim | | USB recognized in Windows, not in BIOS | Fast Boot disabled enumeration | Disable Fast Boot in BIOS; reboot twice with USB inserted | | "Secure Boot violation" when booting | DLC image unsigned | Either sign your bootloader with a MOK (Machine Owner Key) or temporarily disable Secure Boot |
Open the extracted folder, right-click the DLCBoot.exe (or similarly named executable), and select Run as Administrator . dlc boot usb