Some things to check:
1. Have you installed the cable the correct way i.e. Blue connector to MB black end connector to DVD
YES!
EDIT Set jumper to Cable Select.
JUST CHANGED!
2. Can you use Windows Explorer to view contents of CD and DVD?
Try with music CD and data CD e.g your Sony supplied disk
Try the same with DVD. In both cases what can you see in file types?
YES! CAN SEE CONTENTS OF BOTH DATA & AUDIO CD. CAN SEE AUDIO TS FILES (EMPTY) & VIDEO TS FILES ON DVD, BUT AS YOU KNOW, AM MISSING THE CODECS TO PLAY THE DVD.
3. In Nero open the Nero Info Tool. Goto Start/Programs/Nero/Nero Toolkit/Nero info tool (at least correct for my version)
Your DVD should be named at top of dialogue box
LISTED AS: DRIVE 1:0 SONY DVD RW DRU 190-A
On the Drive tab you should have checkmarks next to the available features on your drive.
YES. FOR SUPPORTED READ/WRITE FEATURES.
Configuration tab shows you attached drives and DMA etc
YES. SHOWS ATTACHED HARDWARE, OF WHICH SONY DVD RW DRIVE IS ONE.
Drivers tab shows drivers and audio and video codecs
YES.
ASPI tab /ASPI Installation (drop down box) What does it show for system
EDIT. Just had a look on Sony site they say:
Make sure your System/Nero ASPI files are not corrupt. Go to Nero/Nero tool kit/Nero info tool. Click on the ASPI tab. In the arrow down tab, check both your system and Nero ASPI files. At the bottom, it should display ASPI is installed and working properly. If it does not, please get the latest ASPI update.
http://sony.storagesupport.com/.
Click on the drop down and select Nero ASPI. Should show ASPI is installed and working properly.
UH-OH......CANNOT FIND ASPI TAB.........
Check these out and let me know. Also just check all correct in Device Manager.
Next stage may be necessary - to uninstall the DVD from Device Manager and start again. For now just let me know what you find