I have an alienware bought in 2013. Recently I faced an issue where in it shows no boot device found, please reboot the system. Upon system diagnostics, the hard drive was not getting detected. Bought a new one and installed it, ran the system diagnostics and ensured everything is ok.
Now after powering on, went to boot option and selected cd drive for installing the OS from CD, the system boots up, but still shows me "no boot device found. please reboot the system".
Any advice on what could be the issue.