This is the most common fix for Matshita drives not appearing in "This PC."
Even with the right file, you may encounter errors. Here is a cheat sheet for the : matshita bdmlt uj260 driver exclusive
If the drive is visible in Device Manager but has a yellow exclamation mark, or if it disappears from "This PC," the Windows registry filters are likely corrupted. This is a very common issue with Matshita drives. This is the most common fix for Matshita
: A firmware update specifically for Windows 7 was released by Sony and Panasonic. Some users report success installing this in Compatibility Mode on newer versions of Windows. matshita bdmlt uj260 driver exclusive