Cd-rw works without cd

I install a Sony CRX175 in a P4 2.0 with motherboard QDI,SO W2K and Nero 6.3.

It works fine, but sometimes the recorder starts work, without any cd inside.

Anybody can help me?


Work as in "led blinks " or your writer program suddenly pops up ?

The CD-RW led and the HDD led blinks togheter

Does it happen with a CD in the drive?

Have you tried putting a CDRW or something in your burner and see if it burns?