DVD Burner Sony QW Q30-A does'nt run anymore

I got a sony dvd burner Sony DW Q-30A., one year ago. Everything was allright.
Now, this burner does’nt recognize anything, and Nero does’nt run.
I put the last firmware YYS7_WIN_B, and the reader is running all time, when I put a disc inside, but nothing at all.
What can I do, please?

Thanks in advance