DVD writer only reads CD

Hi everyone

can anyone help me, I have recently brought a new pc, with windows vista,
but untill recently my DVD writer(HL-DT-ST DVDRRW GSA-H30L ) seems to have stopped reading DVD, i can read and write CD-r fine.
here info i got from nero

Hi storm jumper thanks for your help
Iv done what you have suggested but when I run the software the following message appears.
“No ressettable ATA channels with windows drivers found. Nothing has changed”
I also forgot to mention that I am using windows Vista

here is the infomation from nero INFO tool

Nero InfoTool 3.06

Drive Information

Drive : HL-DT-ST DVDRRW GSA-H30L
Type : DVD-RAM Recorder
Firmware Version : S755
Buffer Size : 2 MB
Date : 06-12-26
Serial Number : 6?6;:?3%
Vendor Specific : 06/12/26
Drive Letter : E:
Location : 0:1
Mechanism : Tray
Read Speed : 40 X
Write Speed : 40 X

Read CD Text : Yes
Return C2 Pointers : No
Read CD-R : Yes
Read CD-RW : Yes
Read DVD-ROM : Yes
Read DVD-RAM : Yes
Read DVD-R : Yes
Read DVD-RW : Yes
Read DVD-R DL : Yes
Read DVD+R : Yes
Read DVD+RW : Yes
Read DVD+R DL : Yes
Read BD-ROM : No
Read BD-R : No
Read BD-RE : No
Read HD DVD-ROM : No
Read HD DVD-R : No
Read HD DVD-RW : No
Read HD-BURN : No
Read Digital Audio : Yes
Read CD+G : No
Read VideoCD : Yes

Write CD-R : Yes
Write CD-RW : Yes
Write DVD-R : Yes
Write DVD-RW : Yes
Write DVD-R DL : Yes
Write DVD+R : Yes
Write DVD+RW : Yes
Write DVD+R DL : Yes
Write DVD-RAM : Yes
Write BD-R : No
Write BD-RE : No
Write HD DVD-R : No
Write HD DVD-RW : No
Write HD-BURN-R : No
Write HD-BURN-RW : No
Buffer Underrun Protection : Yes
Mount Rainier : No
SolidBurn : No
Modes : Packet, TAO, DAO, SAO, RAW SAO, RAW DAO, RAW SAO 16, RAW SAO 96, RAW DAO 16, RAW DAO 96

Region Protection Control : RPC II
Region : 2
Changes User : 4
Changes Vendor : 4

Disc Information (E:)

Type : - no disc inserted -

Interface Information

Adapter 1

Description : Primary IDE Channel

Driver
Description : system32\drivers\iastor.sys
Company : Intel Corporation
Version : 6.2.0.2002
Description : Intel Matrix Storage Manager driver

Attached Devices
Description : Master: ST3320820AS
Type : Disk Drive
DMA : On
Description : Slave: HL-DT-ST DVDRRW GSA-H30L
Type : CD-Rom Drive
DMA : Off
Autorun : On

Adapter 2

Description : @usbport.inf,%pci\ven_8086&dev_27cc.devicedesc%;Intel® 82801GB USB2 Enhanced Host Controller - 27CC

Driver
Description : system32\DRIVERS\usbehci.sys
Company : Microsoft Corporation
Version : 6.0.6000.16386 (vista_rtm.061101-2205)
Description : EHCI eUSB Miniport Driver

Attached Devices
Description : Generic- Compact Flash USB Device
Type : Disk Drive
Description : Generic- SM/xD-Picture USB Device
Type : Disk Drive
Description : Generic- SD/MMC USB Device
Type : Disk Drive
Description : Generic- MS/MS-Pro USB Device
Type : Disk Drive
Description : Apple iPod USB Device
Type : Disk Drive

Software Information

Operating System : Professional (6.00.6000 )
Country : United Kingdom
Language : English
ANSI Code Page : 1252
OEM Code Page : 850
DirectX : DirectX 10.0

if you can offer any advice that would be great.

Test the drive in SAFE MODE or in another computer.

Iv tried it in safe mode, same problem, only seems to read CD’s
It was working when i 1st had my pc, but I think after i installed nero it stopped working, iv uninstalled nero, which hasnt helped, and Iv got the latest driver from HP website, Iv tried to enable DMA but no luck.

Then the dvd part is dead.