Vostro 3490, No bootable devices found

[caixm9126]

I tried to turn on my laptop, it shows no bootable devices found. I search online and found some solution form the community, which is mainly working on ‘disable secure boot’ and changed the boot option to legacy boot mode. But in my laptop doesn’t support legacy boot mode on this platform. I also ran the diagnoses and there is no problem found in my laptop. I can’t fix this problem. Can someone help me out?

[caixm9126]

I already disabled secure boot.

[LSUFAN51 · Accepted solution]

Please check if the Hard drive or Solid State Drive is listed in BIOS? If no drive listed, reset BIOS to Defaults to see if it will get the BIOS to detect drive again.

How to restore the BIOS (System Setup) defaults on a Dell Product | Dell US

Also check out  geto's possible solution in the link below:

Solved: No bootable devices found - Dell Community