BENQ DVD DD EW162I 47N9
External Benq 1620. your drive used to be a very good drive. and i hope it still is because i am expecting an internal 1620 to arrive today. but for sake of troubleshooting your problem you could try another drive as this one is a few years old now.
Media ID: MCC 03RG20
Media type: DVD-R
Verbatim Single Layer Media is Made in India by Moser Baer, Made in Taiwan by CMC or Prodisc, or Made in Japan by Taiyo Yuden. from what ive read there is no Made in Singapore Single Layer Verbatim Media.
what is the Inner Hub number on your disc?
do you know how to use Nero cd-dvd speed? can you do a trt and quality scan of a burned MCC 03RG20 coaster?