Have you tried burning a CD in Nero or EZ CD Creator? If not, try this and see if it will work. If it still doesn't work, then you can look at the Blink Codes chart on Plextor's site. This will tell you what is wrong with the drive exactly, by what it is doing. Then contact us for an RMA number, if the drive is bad.
This needs to be done quick, as our RMA for the drives is only through us for the first 30 days, you have about 10 days left. Then the drive would have to be sent to Plextor for Repair/Replacement.
Here is the Blink Code chart page from Plextor:
http://www.plextor.com/english/suppo...nkchart40.html