Situation; The client just replace a defected hard drive on his dell computer. However, he can’t boot with “No bootable devices found”.
Troubleshooting: 1. Run Dell diagnostics tool to confirm the hard drive passing the test.
2. compare the hard drive, we found original hard drive which is defected is SSD hard drive which compatible with UEFI Mode boot. The replaced hard drive is ATA hard drive which is not compatible with UEFI Mode boot. in other words, ATA hard drive is compatible with BIOS Mode boot.
3. Access BIOS settings to change to Legacy boot fixes the problem.
Please refer to this step by step how to enable BIOS mode boot video:
