Alright so I have been having a problem with my 840b drive. Originally before, it was only being seen as a cd drive, and would not read dvd's at all. So I found online to clean my registry and it fix the problem. So I can watch dvd's now on the drive, but it does not detect burnable dvd drives. Here are the following steps I performed. (Note: This drive has no problem with CD's, or reading dvd's, just detecting burnable dvd's.)
1) Went to Device Manger, Suprisely I have two primary IDE channels and one secondary IDE channels, even though I only have two dvd drives. I checked all three IDE channels to make sure they were set up for DMA and they are.
5) I have tried burning it with two separate media, one dvd-r and the other ram.cfm" class="forum_link" target="_blank">dvd-ram, both were unable to be detected.
6) Tried burning with Nero on both dvd-r and dvd ram, no luck.
7) Tried burning again changing the speed to 2x on both dvd-r and dvd ram, no luck.
8) Tried burning with two seperate programs (1clickokay and clone dvd) for each dvd, no luck.
And I believe that's it, below is a copy of the logs I saved for burning it with nero. Just in case it might help.
Recorder: <HP DVD Writer 840b> Version: IMA6 - HA 1 TA 3 - 8.0.3.0
Adapter driver: <IDE> HA 1
Drive buffer : 2048kB
Bus Type : default
CD-ROM: <IDE-DVD DROM6216 >Version: HD08 - HA 1 TA 1 - 8.0.3.0
Adapter driver: <IDE> HA 1
=== Scsi-Device-Map ===
CdRomPeripheral : HP DVD Writer 840b atapi Port 0 ID 0 DMA: On
CdRomPeripheral : IDE-DVD DROM6216 atapi Port 0 ID 1 DMA: On
DiskPeripheral : ST3250823AS atapi Port 1 ID 0 DMA: On
DiskPeripheral : Hitachi HDP725050GLA360 atapi Port 1 ID 1 DMA: On
=== CDRom-Device-Map ===
IDE-DVD DROM6216 F: CdRom1
HP DVD Writer 840b E: CdRom3
=======================
AutoRun : 1
Excluded drive IDs:
WriteBufferSize: 83886080 (0) Byte
BUFE : 0
Physical memory : 2047MB (2097151kB)
Free physical memory: 2047MB (2097151kB)
Memory in use : 26 %
Uncached PFiles: 0x0
Use Inquiry : 1
Global Bus Type: default (0)
Check supported media : Disabled (0)
9.8.2008
UDF/ISO compilation
5:06:23 PM #1 Text 0 File SCSIPTICommands.cpp, Line 424
LockMCN - completed sucessfully for IOCTL_STORAGE_MCN_CONTROL
5:06:23 PM #2 Phase 112 File dlgbrnst.cpp, Line 1762
DVD-Video files reallocation started
5:06:23 PM #3 Phase 114 File dlgbrnst.cpp, Line 1762
DVD-Video files reallocation completed (no file modified)
5:06:23 PM #4 Text 0 File Isodoc.cpp, Line 6668
UDF document burn settings
------------------------------------------
Determine maximum speed : FALSE
Simulate : FALSE
Write : TRUE
Finalize CD : TRUE
Multisession : FALSE
Burning mode : DAO Mode : 1
UDF Mode : UDF/ISO bridge
UDF Options : automatic
UDF Revision : 1.02
UDF Partition Type : physical
ISO Level : 1 (Max. of 11 = 8 + 3 char)
Character set : ISO 9660 Joliet : FALSE
Allow pathdepth more than 8 directories : FALSE
Allow more than 255 characters in path : FALSE
Write ISO9660 ;1 file extensions : TRUE
5:06:24 PM #6 ISO9660GEN -11 File Geniso.cpp, Line 3345
First writeable address = 0 (0x00000000)
5:06:24 PM #7 ISO9660GEN -11 File Geniso.cpp, Line 3345
First writeable address = 0 (0x00000000)
5:06:24 PM #8 Text 0 File Burncd.cpp, Line 3520
Turn on Disc-At-Once, using DVD media
5:07:39 PM #9 Phase 40 File dlgbrnst.cpp, Line 1762
Aborted by user
5:07:39 PM #10 Text 0 File DlgWaitCD.cpp, Line 319
Write in overburning mode: NO (enabled: CD)
5:07:39 PM #11 Text 0 File DlgWaitCD.cpp, Line 2972
Recorder: HP DVD Writer 840b
Medium not present
5:07:39 PM #12 Text 0 File DlgWaitCD.cpp, Line 493
>>> Protocol of DlgWaitCD activities: <<<
=========================================
Insert empty disc to write to.
(Medium in drive: Unknown. Medium required by compilation: DVD R/RW, DVD R DL, DVD-RAM.)
5:07:39 PM #13 Text 0 File SCSIPTICommands.cpp, Line 424
UnLockMCN - completed sucessfully for IOCTL_STORAGE_MCN_CONTROL
Your primary IDE is for your HDD and your secondary is your disk drives. What media are you using? Having high quality media such as Taiyo Yuden or Verbatim is one of the most overlooked factors. If changing media does not solve your problem you could uninstall the driver for your secondary controller then reboot and see if that helps any.
The first brand I use was an TDK dvd-r. The second brand I use was a Fujifilmdvd-ram. I'm currently in Japan so I only have access to Japanese dvd-r's. They barely have +r located here, even though that wouldn't be the problem. And I have tried uninstalling the driver to no avail. Still doesn't work.