I opened the HDD trap door and switched the hard drive with a newer model. Then I switched it back to the old hard drive. But neither of them is now recognized in BIOS. No master unit is detected (but the CD/DVD unit). I switched very cautiously the SATA connector back in place but it does not work.
Of course no OS can be restored or installed on this drive because it is simply not detected in BIOS.
Has anyone the clue for this? I guess there must be a trick that only Samsung service men know about.
Thanks a lot in advance,