I have a laptop and after I installed Windows 7, I can’t see my DVD drive in My Computer and there isn’t an entry in Device Manager for CD/DVD Drives either.

Instead there’s an entry for Mass Storage Controller in Other Devices with an exclamation mark [It states in the properties dialog box of the drivers for this device that “The driver for this device are not installed (Code 28).]
My optical drive is TSST Corp SN –S082H. Before Windows 7, I had Vista and with Vista my optical drive worked fine. But when I performed a clean install of Windows 7, my DVD drive has gone. Although it’s detected in Bios and I can boot my computer with a bootable CD, I can’t use it in Windows 7. (Since I can boot my computer with a bootable CD, this shows that issues of a bad optical drive, loose cables or corrosion don’t apply in my case.) I tried a number of recommended solutions to fix the problem but nothing seemed to work. For example:
- I tried uninstalling the Mass Storage Controller and restarted Windows.
- I tried uninstalling the IDE channel the DVD drive is on and restarted Windows.
- I tried uninstalling all the IDE controllers and restarted Windows. The result of these three actions was that Windows finds the new device and connects to Windows Update to install drivers but a few moments later it says that there are no drivers found for this device. (As far as I know you don’t need drivers for an optical drive.)
- I uninstalled Nero and restarted.
- I tried to run Mr Fix it as suggested in Article Kb314060 of MS website but the application said that it is not compatible with my version of Windows and recommended that I run Windows 7 troubleshooter. I did so but at the end the troubleshooter Windows couldn’t find the drivers.
- I tried deleting the registry entries for UpperFilters and LowerFilters in HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Class\{4D36E965-E325-11CE-BFC1-08002BE10318} as suggested in Article 314060 of MS Support page, but the entries mentioned did not exist in my registry.




- I added the multi string value PxHelp20 for LowerFilters in the same registry entry.
- I merged the following .reg file with my registry and restarted Windows.
REGEDIT4
[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Class\{4D36E965-E325-11CE-BFC1-08002BE10318}]
"UpperFilters"=-
"LowerFilters"=-
[-HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Cdr4_2K]
[-HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Cdralw2k]
[-HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Cdudf]
[-HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\UdfReadr]
- I ran the following script and restarted Windows.
'Restore CD-Roms and DVD's to Explorer
'© Doug Knox - rev 04/14/2002
'Downloaded from www.dougknox.com
'based on cdgone.reg
Option Explicit
On Error Resume Next
Dim WshShell, Message
Set WshShell = WScript.CreateObject("WScript.Shell")
WshShell.RegDelete "HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Class\{4D36E965-E325-11CE-BFC1-08002BE10318}\UpperFilters"
WshShell.RegDelete "HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Class\{4D36E965-E325-11CE-BFC1-08002BE10318}\LowerFilters"
WshShell.RegDelete "HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Cdr4_2K\"
WshShell.RegDelete "HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Cdralw2k\"
WshShell.RegDelete "HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Cdudf\"
WshShell.RegDelete "HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\UdfReadr\"
Set WshShell = Nothing
Message = "Your CD/DVD-Rom drives should now appear in Windows Explorer." & vbCR
Message = Message & "You may need to reboot your computer to see the change."
MsgBox Message, 4096,"Finished!"
- I tried typing in the commands suggested in Article Kb975270 in the command prompt but each time I pressed Enter I received the message “The power scheme, subgroup or setting specified does not exist.”

On the other hand I can see the name of my optical drive in some registry entries such as:





The hardware of my laptop is as follows:
CPU: Intel Core 2 CPU T7200 2.00 Ghz
MB: Intel Corporation MPAD-MSAE Customer Reference Boards
Chipset: Intel 955XM/945GM/PM/GMS/940
Ram: 2 Gb
HDD: 120 Gb Sata150 NCQ Toshiba
Optical Drive: TSSTcorp CDDVD SN-S082H
VGA: Mobile Intel 945 Express
LAN: o/b Realtek RTL8169/8110
WLAN: o/b Intel Pro Wireless 3945ABG
Sound: o/b Realtek High Def. Audio
So, what's the problem with my drive? Can you think of any solutions to this problem? Thanks for your help.

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