I have been having some problem with my optorite DD0203 cd/dvd rw.

The problem is one day i can burn a DVD use the drive all day then next thing i know i can restart the computer or even shut down for the day and then the next time i try to burn all i see is the busy light and it will not even start to burn what can cause this to happen?

i have the latest firmware 2.50 and when i update it in dos mode everything goes fine writing data to cd-wr ok verifying data ok updating bio verison stops at 34 it will not complete what should i do?