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I have tried several things to troubleshoot with no solution:
-restart the machine with no USB inserted
-F2 > checked Boot sequence, POST, nothing unusual
-went to support.dell.com > ran a Dell System Detect test, everything passed
-did a flea power drain
What else can I try?
*to set-up the HDD as the First Boot Device in BIOS BOOT sequence.
*Update BIOS to the latest version
*Re-install graphics card drivers with the latest drivers