Is my GSA-4160B "Healthy"?



Hi there,
This is my first post here, I’ve been an avid reader for quite some time now though, great community indeed.
Alright, I’m experiencing a strange problem; my drive (GSA-4160B VA300) doesn’t recognize DVD-RAM discs anymore. It used to work like a charm with that sort of medium though, I just cannot understand what happened? DVD-Ram driver is installed(!)
I’ve run a test (Nero CD-DVD Speed, original audio CD)

Can anyone confirm that the drive is pretty alright? Thanks heaps in advance!