Can you suply more info please...
You say "My Computer doesn't recognise nt DVD or DVD RW drive"
But you then go on and say "However, I can play CD's & DVD's though Media Player"
I'm a bit confused by the above. Because if you can used Windows media player, then your PC must be recognising your drive/s!?
Also... "If I put a pre-recorded music CD in either drive and switch on the PC "My Computer" recognises it. But this doesn't work with blank disc."
A blank recordable disc will almost certainly not be recognised by a CD/DVD ROM drive (only after data has been written to it and the session closed). Though it should be recognised by a CD RW drive. If not, it maybe sounds like you've got a problem with the CD RW drive!
You also say "The problem is that I can't burn any CD's or DVD's because the blank disc are not recognised"
What do you mean by this? Are you saying that the software that you are using to copy your cd's etc. does not recognise the blank CD? If this is the case. What exactly happens???
Also.. what software are you trying to use to copy your CD's? (EG. NERO6, INSTANT CD/DVD etc.)
You can try going to MY COMPUTER, right click on your CD RW drive and select properties. I suggest making sure that "prompt me each time to choose an action" is checked. At least this way you should see a prompt pop up when you insert a blank disc into your CD RW drive.
Also while you are in the properties. Go to the recording tab and check that "enable CD recording on this drive" is enabled.
Good luck and let us know how you get on.