HP released firmware updates for some GUC0N units.
⚠️ Do not interrupt firmware update – can brick the drive.
Cause: Corrupted registry entries for CD/DVD drivers (upper and lower filters). hl-dt-st dvdram guc0n driver
Fix:
If you cannot see the drive in File Explorer or it has a yellow exclamation mark in Device Manager, follow this troubleshooting guide in order. HP released firmware updates for some GUC0N units
The HL-DT-ST DVD-RAM GUC0N is an optical disc drive (ODD) manufactured by LG Electronics. ("HL-DT-ST" stands for Hitachi-LG Data Storage).
The most important thing to know: This drive uses a generic Microsoft Windows driver. There is typically no "driver" to download for this specific hardware. If the drive is not working, the issue is almost always a conflict within Windows, a loose physical connection, or corrupted registry filters—not a missing driver file. ⚠️ Do not interrupt firmware update – can
While there are no "drivers" to update, there may be Firmware updates. Firmware updates the internal software of the drive itself, often to support newer types of blank media (DVD+R DL, etc.).
You do not need a separate driver download from HL-DT-ST or LG.
If Windows can’t find a driver automatically:
No official driver download exists on LG’s website — because none is required.