My dru-870s sony

[sarahhhhh]

my dru-870s sony is not detected either by bios or by device manager.what should i do?

 

[hang-the-9]

Make sure it's installed properly check all connections to it. Try a different SATA port on the motherboard, try a new cable. If none of those work, try it with a different PC. If that PC does not see it, replace the drive.