The Firmware Page

I have a HP Pavillion dv4000. This DVD drive works when in the quickplay mode but when I launch windows the drive does not exist - does not show up in "my computer". In Device Manager I see the drive but it has yellow circle icon with the exclamation point and I get this message "Windows cannot load the device driver for this hardware. The driver may be corrupted or missing. (Code 39)". When I try and download a driver I get a a "can't recognize device" error. Any help appreciated!

thanks

rick

try unistalling everything under ata/atapi controllers and restarting your computer, let windows redect them

thanks for the tip - i deleted ata/atapi and then rebooted. windows reinstalled ata/atapi but the dvd driver error is still there - and the drive cannot be seen on my computer - any other suggestions?

thanks!

rick

sometimes registry problems can cause this, first backup your existing registry, then delete the upper and lower filters

1. Start Registry Editor (Regedt32.exe).
2. Locate the UpperFilters value under the following key in the registry:
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Class\{4D36E965-E325-11CE-BFC1-08002BE10318}
3. On the Edit menu, click Delete, and then click OK.
4. Locate the LowerFilters value under the same key in the registry:
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Class\{4D36E965-E325-11CE-BFC1-08002BE10318}
5. On the Edit menu, click Delete, and then click OK.
6. Quit Registry Editor.
NOTE: After you remove the Upperfilters value and the Lowerfilters value, if you notice lost functionality in a particular program, such as CD recording software, you may need to reinstall that software. If the problem recurs, consult with the software vendor for assistance.


7. Restart your computer

this set of instructions worked perfectly - thanks! I was able to now see the drive on my computer, and the dvd worked. i was able to reload the software to insure all functionality.

i really appreciate the help!! i have been struggling with this for some time on my own.

rick

no problems, happy to help, happy burning

I have a HL-DT-ST RW/DVD GCC-4244N drive, as well. After installing Nero, it burns OK., but aftert a while (usually some days) it says: 'Could not perform EndTrack' and discs can't be used.

Can you help me? Is it just a firmware upgrade problem or something else?

Thx,
Mark