DVD RW driver

wex96

Hi Guys i have a hp pavillion g6 laptop with a dvd rw in it but its only seen as a cd rom. can't up date drivers as it says its upto date, no good with microsoft fix-it either.
tried regedit it has no upper or lower filters.
any ideas??
thanks

djerk

what operating system is installed and what does the drive appear as in device manager?

wex96

running windows 7 64bit.
device manager has it as: hp cddvdw sn 208bb sata cdrom device

djerk

i take it youve already tested whether or not it can read a dvd?

first i would check the properties of the drive (right click the drive in dev manager) and then driver > driver details to see if some other software attached some erroneous driver thats causing a conflict. maybe you installed some 3rd party burning software/mounting tool or some such?

if theres nothing apparent there.. try simply uninstalling the drive. right click and uninstall via device manager, reboot, and see if that fixes your issue.

if not.. then i would suggest removing the upper/lower filters.. but you mentioned that they didnt exist though?

are you positive you checked in the correct area of the registry?

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Class\{4D36E965-E325-11CE-BFC1-08002BE10318}

if no key exists you can try creating one with this method:

Press the Windows logo key + R to open the Run box.
Type regedit in the Run box, then press Enter. If you are prompted for an administrator password or for a confirmation, type the password, or click Allow
In the navigation pane, locate the following registry subkey:
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\atapi
Right-click atapi, point to New, then click Key.
Type Controller0, and then press Enter.
Right-click Controller0, point to New, and then click DWORD(32-bit) Value .
Type EnumDevice1, and then press Enter.
Right-click EnumDevice1, click Modify....
Type 1 in the Value data box, and then click OK.
Exit Registry Editor.
Restart the computer.

johndoe99

If the drivers are up-to-date. then the DVDRW diode could have become defective, so its only being recognised as a CDROM.

solomafioso

You could try getting the DEV and VEN numbers of the device and inputting them in to PCI database.

http://www.pcidatabase.com/

Might be able to see if there are any updated drivers.

djerk

drivers shouldnt be an issue, should work fine with the standard atapi drivers provided by windows.

wex96

still no luck. checked a friends similiar laptop but toshiba and it has C:windows\system32\drivers\tdcmdpst.sys as well as cdrom.sys

djerk

tdcmdpst.sys belongs to some toshiba software and shouldnt be necessary for the proper functioning of the hardware.

sometimes a drive might appear as a 'cd-rom' but still operate correctly. im just wondering if you could try and burn a dvd to test it?

you can try these utilities to verify the capabilities of the drive and check any filters that might be present.

http://www.bustrace.com/products/cd-dvd.htm
http://www.bustrace.com/products/devfilter.htm

wex96

Sorry about delay.. dvd burns dvd's but still not playing them :-(

wex96

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Filter Driver Load Order http://www.bustrace.com

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Upper Filter Drivers: No Upper Filter Drivers specified for this device.
Device Object: hp CDDVDW SN-208BB SATA CdRom Device
Lower Filter Drivers: No Lower Filter Drivers specified for this device