Acer 1610A Problem

Can anyone help ?

I have the Acer 1610A (CDRW 16x10x40) I have had it for about 18 months now and it has stopped working. Everytime I try and burm a CD it ejects the blank CD saying the drive is empty and to insert a CD (I am using Nero). I cannot even read CDs on it anymore.

Any help would be appreciated, thanks in advance.