NEC ND-1100a reads DVDs but not CDs

hi…i have prob with my 1100a recorder…the recorder worked fine for 7 months until i decided to left my pc over the night. One morning i found out that it couldnt read ANY cd, cd-r or cd-rw. Now my nec reads ONLY already written dvds :a i have tried changing probably all the firmwares available for my dvd+r. maby u guys could help me. this optical drive pisses really me off :a

Welcome to the forum.
It sounds very like your drive is faulty.
If you have only had the drive for 7 months it should still be covered under the warranty.

If possible, try the drive in another PC, if it still fails RMA your drive.