[Help] DVD-ROM only read CD

I have Compaq R3000Z notebook, which has Toshiba SD-C2612 DVD-Rom, according to manual, it should support "
DVD-5 (single-sided, single layered)
DVD-9 (singled-sided, double layered)
DVD-10 (double-sided, single layered)
DVD-18 (double-sided, double layered
DVD-R (read, 3.9GB/4.7GB)
DVD-RW (read, 4.7GB)
DVD-RAM (read, 2.6GB, 4.7GB/1.46GB)

and CD, CD-RW.

But it only read CD/CD-RW, I try DVD-R, DVD+R, DVD-9, it can’t read them.

as far as i know dvd drives have 2 seperate lasers (one for cds and one for dvds) , its possible that the dvd laser burned, actually its very common , happens to alot of dvd drives after a few years