Change bios sata operation from Dell default raid to AHCI, save change, exit bios, then do a clean OS install on ssd.
Have attempted to reinstall the OS(windows 10 Por)clean copy, deleting, formatting one partition only. The BIOS sees the SSD, ran Long HD test/passes. Upon each time I install windows it boots to it one time, able to add user name, password, security questions, but after rebooting, "No boo-table device found" error. I check the BIOS settings & even used factory & default setting they seem to be correct.  I am still not able to boot to the internal SSD. The MB also passed diagnostics. Please advise.
Unable to boot to windows on internal SSD