Di ko na alam stockrom nitoFlash stock ROM ..

i priority boot mo yung hdd na may os sa bios settings..
start up repair..
disconnect,reconnect hdd baka lumuwag,naalog.
Reformat lang kailangan niya. Software lng naman nung prob nya at hindi hardware.Ts, palitan muna hardisk mo, tulad yan sa akin, missing yong boot menu hardisk pala sira...