Here is the error message I am getting. At 10:32pm during the process the burn failed. Windows XP 5.1 IA32 WinAspi: - ahead WinASPI: File 'C:\Program Files\Nero\Nero 7\Core\Wnaspi32.dll': Ver=2.0.1.74, size=169792 bytes, created 6/11/2007 8:36:34 AM NT-SPTI used Nero Version: 7.5.14.6 Internal Version: 7, 5, 14, 6 (Nero Express) Recorder: <SONY DVD RW DRU-190A> Version: 1.65 - HA 1 TA 0 - 7.5.14.6 Adapter driver: <IDE> HA 1 Drive buffer : 2048kB Bus Type : default (0) -> ATAPI, detected: ? CD-ROM: <SONY DVD RW DRU-190A >Version: 1.65 - HA 1 TA 0 - 7.5.14.6 Adapter driver: <IDE> HA 1 === Scsi-Device-Map === DiskPeripheral : WDC WD3200AAJB-00WGA0 atapi Port 0 ID 0 DMA: On DiskPeripheral : WDC WD1600JB-00DUA3 atapi Port 0 ID 1 DMA: On CdRomPeripheral : SONY DVD RW DRU-190A atapi Port 1 ID 0 DMA: On CdRomPeripheral : PIONEER DVD-RW DVR-105 atapi Port 1 ID 1 DMA: On === CDRom-Device-Map === SONY DVD RW DRU-190A F: CDRom0 PIONEER DVD-RW DVR-105 G: CDRom1 ======================= AutoRun : 1 Excluded drive IDs: WriteBufferSize: 83886080 (0) Byte BUFE : 0 Physical memory : 991MB (1015280kB) Free physical memory: 610MB (625124kB) Memory in use : 38 % Uncached PFiles: 0x0 Use Inquiry : 1 Global Bus Type: default (0) Check supported media : Disabled (0) 2.6.2008 Audio CD 10:30:37 PM #1 Text 0 File SCSIPTICommands.cpp, Line 411 LockMCN - completed sucessfully for IOCTL_STORAGE_MCN_CONTROL 10:30:38 PM #2 CDADOC -1 File Cdadoc.cpp, Line 1635 Audio item log info: Audio document burn settings: ============================= Burn mode: DAO, CD Text: On, Cache disk or network files: No, Cache small files: No, Cache files smaller than 65536 bytes. Audio Multisession: No List of audio tracks: ===================== Track 01: Track 02: Track 03: Track 04: Track 05: Track 06: Track 07: Track 08: Track 09: Track 10: Track 11: Track 12: Track 13: Track 14 Track 15: sl.mp3'. Track 16: Track 17: Total size: 60:44.26 10:30:38 PM #3 Text 0 File Burncd.cpp, Line 3178 SONY DVD RW DRU-190A Power-Burn activated 10:30:38 PM #4 Text 0 File AudioCompilationImpl.cpp, Line 838 DRM: StartDrmRecording(RealRec:1, ImageRec:0, Copies:1) DRM: Beginning burn process. 10:30:38 PM #5 Text 0 File Burncd.cpp, Line 3490 Turn on Disc-At-Once, using CD-R/RW media 10:31:35 PM #6 Text 0 File DlgWaitCD.cpp, Line 307 Last possible write address on media: 359848 ( 79:59.73) Last address to be written: 273175 ( 60:44.25) 10:31:35 PM #7 Text 0 File DlgWaitCD.cpp, Line 319 Write in overburning mode: NO (enabled: CD) 10:31:35 PM #8 Text 0 File DlgWaitCD.cpp, Line 2940 Recorder: SONY DVD RW DRU-190A; CDRW code: 00 97 34 22; OSJ entry from: Mitsubishi Chemical ATIP Data: Special Info [hex] 1: E1 00 C6, 2: 61 22 16 (LI 97:34.22), 3: 4F 3B 4A (LO 79:59.74) Additional Info [hex] 1: 02 3A B0, 2: 5C C6 26, 3: 00 80 80 (invalid) 10:31:35 PM #9 Text 0 File DlgWaitCD.cpp, Line 493 >>> Protocol of DlgWaitCD activities: <<< ========================================= This disc is not empty. (Medium in drive: CD-RW. Medium required by compilation: CD-R/RW.) Disc was erased successfully. Accessing disc... (Medium in drive: CD-RW. Medium required by compilation: CD-R/RW.) 10:31:35 PM #10 Text 0 File ThreadedTransferInterface.cpp, Line 792 Setup items (after recorder preparation) 0: TRM_AUDIO_NOPRE 2 indices, index0 (150) not provided original disc pos #0 + 19229 (19229) = #19229/4:16.29 relocatable, disc pos for caching/writing not required/not required -> TRM_AUDIO_NOPRE, 2352, config 0, wanted index0 0 blocks, length 19229 blocks [F: SONY DVD RW DRU-190A] 1: TRM_AUDIO_NOPRE 2 indices, index0 (0) not provided original disc pos #0 + 15534 (15534) = #15534/3:27.9 relocatable, disc pos for caching/writing not required/not required -> TRM_AUDIO_NOPRE, 2352, config 0, wanted index0 0 blocks, length 15534 blocks [F: SONY DVD RW DRU-190A] 2: TRM_AUDIO_NOPRE 2 indices, index0 (0) not provided original disc pos #0 + 14382 (14382) = #14382/3:11.57 relocatable, disc pos for caching/writing not required/not required -> TRM_AUDIO_NOPRE, 2352, config 0, wanted index0 0 blocks, length 14382 blocks [F: SONY DVD RW DRU-190A] 3: TRM_AUDIO_NOPRE 2 indices, index0 (0) not provided original disc pos #0 + 18010 (18010) = #18010/4:0.10 relocatable, disc pos for caching/writing not required/not required -> TRM_AUDIO_NOPRE, 2352, config 0, wanted index0 0 blocks, length 18010 blocks [F: SONY DVD RW DRU-190A] 4: TRM_AUDIO_NOPRE 2 indices, index0 (0) not provided original disc pos #0 + 19203 (19203) = #19203/4:16.3 relocatable, disc pos for caching/writing not required/not required -> TRM_AUDIO_NOPRE, 2352, config 0, wanted index0 0 blocks, length 19203 blocks [F: SONY DVD RW DRU-190A] 5: TRM_AUDIO_NOPRE 2 indices, index0 (0) not provided original disc pos #0 + 13244 (13244) = #13244/2:56.44 relocatable, disc pos for caching/writing not required/not required -> TRM_AUDIO_NOPRE, 2352, config 0, wanted index0 0 blocks, length 13244 blocks [F: SONY DVD RW DRU-190A] 6: TRM_AUDIO_NOPRE 2 indices, index0 (0) not provided original disc pos #0 + 18349 (18349) = #18349/4:4.49 relocatable, disc pos for caching/writing not required/not required -> TRM_AUDIO_NOPRE, 2352, config 0, wanted index0 0 blocks, length 18349 blocks [F: SONY DVD RW DRU-190A] 7: TRM_AUDIO_NOPRE 2 indices, index0 (0) not provided original disc pos #0 + 13871 (13871) = #13871/3:4.71 relocatable, disc pos for caching/writing not required/not required -> TRM_AUDIO_NOPRE, 2352, config 0, wanted index0 0 blocks, length 13871 blocks [F: SONY DVD RW DRU-190A] 8: TRM_AUDIO_NOPRE 2 indices, index0 (0) not provided original disc pos #0 + 15230 (15230) = #15230/3:23.5 relocatable, disc pos for caching/writing not required/not required -> TRM_AUDIO_NOPRE, 2352, config 0, wanted index0 0 blocks, length 15230 blocks [F: SONY DVD RW DRU-190A] 9: TRM_AUDIO_NOPRE 2 indices, index0 (0) not provided original disc pos #0 + 16382 (16382) = #16382/3:38.32 relocatable, disc pos for caching/writing not required/not required -> TRM_AUDIO_NOPRE, 2352, config 0, wanted index0 0 blocks, length 16382 blocks [F: SONY DVD RW DRU-190A] 10: TRM_AUDIO_NOPRE 2 indices, index0 (0) not provided original disc pos #0 + 11420 (11420) = #11420/2:32.20 relocatable, disc pos for caching/writing not required/not required -> TRM_AUDIO_NOPRE, 2352, config 0, wanted index0 0 blocks, length 11420 blocks [F: SONY DVD RW DRU-190A] 11: TRM_AUDIO_NOPRE 2 indices, index0 (0) not provided original disc pos #0 + 17189 (17189) = #17189/3:49.14 relocatable, disc pos for caching/writing not required/not required -> TRM_AUDIO_NOPRE, 2352, config 0, wanted index0 0 blocks, length 17189 blocks [F: SONY DVD RW DRU-190A] 12: TRM_AUDIO_NOPRE 2 indices, index0 (0) not provided original disc pos #0 + 17513 (17513) = #17513/3:53.38 relocatable, disc pos for caching/writing not required/not required -> TRM_AUDIO_NOPRE, 2352, config 0, wanted index0 0 blocks, length 17513 blocks [F: SONY DVD RW DRU-190A] 13: TRM_AUDIO_NOPRE 2 indices, index0 (0) not provided original disc pos #0 + 14211 (14211) = #14211/3:9.36 relocatable, disc pos for caching/writing not required/not required -> TRM_AUDIO_NOPRE, 2352, config 0, wanted index0 0 blocks, length 14211 blocks [F: SONY DVD RW DRU-190A] 14: TRM_AUDIO_NOPRE 2 indices, index0 (0) not provided original disc pos #0 + 19006 (19006) = #19006/4:13.31 relocatable, disc pos for caching/writing not required/not required -> TRM_AUDIO_NOPRE, 2352, config 0, wanted index0 0 blocks, length 19006 blocks [F: SONY DVD RW DRU-190A] 15: TRM_AUDIO_NOPRE 2 indices, index0 (0) not provided original disc pos #0 + 14178 (14178) = #14178/3:9.3 relocatable, disc pos for caching/writing not required/not required -> TRM_AUDIO_NOPRE, 2352, config 0, wanted index0 0 blocks, length 14178 blocks [F: SONY DVD RW DRU-190A] 16: TRM_AUDIO_NOPRE 2 indices, index0 (0) not provided original disc pos #0 + 16225 (16225) = #16225/3:36.25 relocatable, disc pos for caching/writing not required/not required -> TRM_AUDIO_NOPRE, 2352, config 0, wanted index0 0 blocks, length 16225 blocks [F: SONY DVD RW DRU-190A] ----- 10:31:35 PM #11 Text 0 File ThreadedTransferInterface.cpp, Line 995 Prepare [F: SONY DVD RW DRU-190A] for write in CUE-sheet-DAO DAO infos: ========== MCN: "" TOCType: 0x00; Session Closed, disc fixated Tracks 1 to 17: Idx 0 Idx 1 Next Trk 1: TRM_AUDIO_NOPRE, 2352/0x00, FilePos 0 352800 45579408, ISRC "" 2: TRM_AUDIO_NOPRE, 2352/0x00, FilePos 45579408 45579408 82115376, ISRC "" 3: TRM_AUDIO_NOPRE, 2352/0x00, FilePos 82115376 82115376 115941840, ISRC "" 4: TRM_AUDIO_NOPRE, 2352/0x00, FilePos 115941840 115941840 158301360, ISRC "" 5: TRM_AUDIO_NOPRE, 2352/0x00, FilePos 158301360 158301360 203466816, ISRC "" 6: TRM_AUDIO_NOPRE, 2352/0x00, FilePos 203466816 203466816 234616704, ISRC "" 7: TRM_AUDIO_NOPRE, 2352/0x00, FilePos 234616704 234616704 277773552, ISRC "" 8: TRM_AUDIO_NOPRE, 2352/0x00, FilePos 277773552 277773552 310398144, ISRC "" 9: TRM_AUDIO_NOPRE, 2352/0x00, FilePos 310398144 310398144 346219104, ISRC "" 10: TRM_AUDIO_NOPRE, 2352/0x00, FilePos 346219104 346219104 384749568, ISRC "" 11: TRM_AUDIO_NOPRE, 2352/0x00, FilePos 384749568 384749568 411609408, ISRC "" 12: TRM_AUDIO_NOPRE, 2352/0x00, FilePos 411609408 411609408 452037936, ISRC "" 13: TRM_AUDIO_NOPRE, 2352/0x00, FilePos 452037936 452037936 493228512, ISRC "" 14: TRM_AUDIO_NOPRE, 2352/0x00, FilePos 493228512 493228512 526652784, ISRC "" 15: TRM_AUDIO_NOPRE, 2352/0x00, FilePos 526652784 526652784 571354896, ISRC "" 16: TRM_AUDIO_NOPRE, 2352/0x00, FilePos 571354896 571354896 604701552, ISRC "" 17: TRM_AUDIO_NOPRE, 2352/0x00, FilePos 604701552 604701552 642862752, ISRC "" DAO layout: =========== ___Start_|____Track_|_Idx_|_CtrlAdr_|_____Size_|______NWA_|_RecDep__________ -150 | lead-in | 0 | 0x01 | 0 | 0 | 0x00 -150 | 1 | 0 | 0x21 | 0 | 0 | 0x00 0 | 1 | 1 | 0x21 | 19229 | 0 | 0x00 19229 | 2 | 0 | 0x21 | 0 | 0 | 0x00 19229 | 2 | 1 | 0x21 | 15534 | 19229 | 0x00 34763 | 3 | 0 | 0x21 | 0 | 0 | 0x00 34763 | 3 | 1 | 0x21 | 14382 | 34763 | 0x00 49145 | 4 | 0 | 0x21 | 0 | 0 | 0x00 49145 | 4 | 1 | 0x21 | 18010 | 49145 | 0x00 67155 | 5 | 0 | 0x21 | 0 | 0 | 0x00 67155 | 5 | 1 | 0x21 | 19203 | 67155 | 0x00 86358 | 6 | 0 | 0x21 | 0 | 0 | 0x00 86358 | 6 | 1 | 0x21 | 13244 | 86358 | 0x00 99602 | 7 | 0 | 0x21 | 0 | 0 | 0x00 99602 | 7 | 1 | 0x21 | 18349 | 99602 | 0x00 117951 | 8 | 0 | 0x21 | 0 | 0 | 0x00 117951 | 8 | 1 | 0x21 | 13871 | 117951 | 0x00 131822 | 9 | 0 | 0x21 | 0 | 0 | 0x00 131822 | 9 | 1 | 0x21 | 15230 | 131822 | 0x00 147052 | 10 | 0 | 0x21 | 0 | 0 | 0x00 147052 | 10 | 1 | 0x21 | 16382 | 147052 | 0x00 163434 | 11 | 0 | 0x21 | 0 | 0 | 0x00 163434 | 11 | 1 | 0x21 | 11420 | 163434 | 0x00 174854 | 12 | 0 | 0x21 | 0 | 0 | 0x00 174854 | 12 | 1 | 0x21 | 17189 | 174854 | 0x00 192043 | 13 | 0 | 0x21 | 0 | 0 | 0x00 192043 | 13 | 1 | 0x21 | 17513 | 192043 | 0x00 209556 | 14 | 0 | 0x21 | 0 | 0 | 0x00 209556 | 14 | 1 | 0x21 | 14211 | 209556 | 0x00 223767 | 15 | 0 | 0x21 | 0 | 0 | 0x00 223767 | 15 | 1 | 0x21 | 19006 | 223767 | 0x00 242773 | 16 | 0 | 0x21 | 0 | 0 | 0x00 242773 | 16 | 1 | 0x21 | 14178 | 242773 | 0x00 256951 | 17 | 0 | 0x21 | 0 | 0 | 0x00 256951 | 17 | 1 | 0x21 | 16225 | 256951 | 0x00 273176 | lead-out | 1 | 0x01 | 0 | 0 | 0x00 10:31:35 PM #12 Text 0 File SCSIPTICommands.cpp, Line 209 SPTILockVolume - completed successfully for FCTL_LOCK_VOLUME 10:31:35 PM #13 Text 0 File Burncd.cpp, Line 4263 Caching options: cache CDRom or Network-No, small files-No (<64KB) 10:31:35 PM #14 Phase 36 File dlgbrnst.cpp, Line 1760 Burn process started at 4x (600 KB/s) 10:31:35 PM #15 Text 0 File ThreadedTransferInterface.cpp, Line 2712 Verifying disc position of item 0 (relocatable, no disc pos, no patch infos, orig at #0): write at #0 10:31:35 PM #16 Text 0 File ThreadedTransferInterface.cpp, Line 2712 Verifying disc position of item 1 (relocatable, no disc pos, no patch infos, orig at #0): write at #19229 10:31:35 PM #17 Text 0 File ThreadedTransferInterface.cpp, Line 2712 Verifying disc position of item 2 (relocatable, no disc pos, no patch infos, orig at #0): write at #34763 10:31:35 PM #18 Text 0 File ThreadedTransferInterface.cpp, Line 2712 Verifying disc position of item 3 (relocatable, no disc pos, no patch infos, orig at #0): write at #49145 10:31:35 PM #19 Text 0 File ThreadedTransferInterface.cpp, Line 2712 Verifying disc position of item 4 (relocatable, no disc pos, no patch infos, orig at #0): write at #67155 10:31:35 PM #20 Text 0 File ThreadedTransferInterface.cpp, Line 2712 Verifying disc position of item 5 (relocatable, no disc pos, no patch infos, orig at #0): write at #86358 10:31:35 PM #21 Text 0 File ThreadedTransferInterface.cpp, Line 2712 Verifying disc position of item 6 (relocatable, no disc pos, no patch infos, orig at #0): write at #99602 10:31:35 PM #22 Text 0 File ThreadedTransferInterface.cpp, Line 2712 Verifying disc position of item 7 (relocatable, no disc pos, no patch infos, orig at #0): write at #117951 10:31:35 PM #23 Text 0 File ThreadedTransferInterface.cpp, Line 2712 Verifying disc position of item 8 (relocatable, no disc pos, no patch infos, orig at #0): write at #131822 10:31:35 PM #24 Text 0 File ThreadedTransferInterface.cpp, Line 2712 Verifying disc position of item 9 (relocatable, no disc pos, no patch infos, orig at #0): write at #147052 10:31:35 PM #25 Text 0 File ThreadedTransferInterface.cpp, Line 2712 Verifying disc position of item 10 (relocatable, no disc pos, no patch infos, orig at #0): write at #163434 10:31:35 PM #26 Text 0 File ThreadedTransferInterface.cpp, Line 2712 Verifying disc position of item 11 (relocatable, no disc pos, no patch infos, orig at #0): write at #174854 10:31:35 PM #27 Text 0 File ThreadedTransferInterface.cpp, Line 2712 Verifying disc position of item 12 (relocatable, no disc pos, no patch infos, orig at #0): write at #192043 10:31:35 PM #28 Text 0 File ThreadedTransferInterface.cpp, Line 2712 Verifying disc position of item 13 (relocatable, no disc pos, no patch infos, orig at #0): write at #209556 10:31:35 PM #29 Text 0 File ThreadedTransferInterface.cpp, Line 2712 Verifying disc position of item 14 (relocatable, no disc pos, no patch infos, orig at #0): write at #223767 10:31:35 PM #30 Text 0 File ThreadedTransferInterface.cpp, Line 2712 Verifying disc position of item 15 (relocatable, no disc pos, no patch infos, orig at #0): write at #242773 10:31:35 PM #31 Text 0 File ThreadedTransferInterface.cpp, Line 2712 Verifying disc position of item 16 (relocatable, no disc pos, no patch infos, orig at #0): write at #256951 10:31:35 PM #32 Text 0 File MMC.cpp, Line 17673 StartDAO : CD-Text - On 10:31:35 PM #33 Text 0 File MMC.cpp, Line 22359 Set BUFE: Power-Burn -> ON , Adapt writespeed to disc : ON 10:31:35 PM #34 Text 0 File MMC.cpp, Line 17903 CueData, Len=160 21 00 00 41 00 00 00 00 21 01 00 00 00 00 00 00 21 01 01 00 00 00 02 00 21 02 01 00 00 04 12 1d 21 03 01 00 00 07 2d 26 21 04 01 00 00 0a 39 14 21 05 01 00 00 0e 39 1e 21 06 01 00 00 13 0d 21 21 07 01 00 00 16 0a 02 21 08 01 00 00 1a 0e 33 21 09 01 00 00 1d 13 2f 21 0a 01 00 00 20 2a 34 21 0b 01 00 00 24 15 09 21 0c 01 00 00 26 35 1d 21 0d 01 00 00 2a 2a 2b 21 0e 01 00 00 2e 24 06 21 0f 01 00 00 31 2d 2a 21 10 01 00 00 35 3a 49 21 11 01 00 00 39 08 01 01 aa 01 01 00 3c 2c 1a 10:31:35 PM #35 Text 0 File ThreadedTransfer.cpp, Line 269 Pipe memory size 83836800 10:32:16 PM #36 SPTI -1502 File SCSIPassThrough.cpp, Line 179 CdRom0: SCSIStatus(x02) WinError(0) NeroError(-1502) Sense Key: 0x04 (KEY_HARDWARE_ERROR) Sense Code: 0x08 Sense Qual: 0x03 CDB Data: 0x2A 00 00 00 00 A2 00 00 1B 00 00 00 Sense Area: 0x70 00 04 00 00 00 00 0A 00 00 00 00 08 03 Buffer x06fa7040: Len xf810 0x00 00 FF FF 00 00 00 00 FF FF FE FF FF FF 01 00 0x01 00 FF FF 00 00 00 00 FF FF 02 00 00 00 FF FF 0xFF FF 00 00 00 00 FE FF 01 00 00 00 00 00 01 00 10:32:16 PM #37 CDR -1502 File Writer.cpp, Line 299 DMA-driver error, CRC error F: SONY DVD RW DRU-190A 10:34:26 PM #38 Phase 38 File dlgbrnst.cpp, Line 1760 Burn process failed at 4x (600 KB/s) 10:34:26 PM #39 Text 0 File AudioCompilationImpl.cpp, Line 863 DRM: DRM burn session terminated. 10:34:26 PM #40 Text 0 File AudioCompilationImpl.cpp, Line 892 DRM: Closing entire DRM handling. Bye. 10:34:26 PM #41 Text 0 File SCSIPTICommands.cpp, Line 254 SPTIDismountVolume - completed successfully for FSCTL_DISMOUNT_VOLUME 10:34:29 PM #42 Text 0 File Cdrdrv.cpp, Line 11108 DriveLocker: UnLockVolume completed 10:34:29 PM #43 Text 0 File SCSIPTICommands.cpp, Line 411 UnLockMCN - completed sucessfully for IOCTL_STORAGE_MCN_CONTROL Existing drivers: Registry Keys: HKLM\Software\Microsoft\Windows NT\CurrentVersion\WinLogon\AllocateCDROMs : 0 (Security Option)

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A post that large is likely to get this whole subject (thread) deleted - that's certainly the case for HxxxxTxxxx logs, and yours is also quite large. Most of it, if not all of it, is useless information to me/us. Check out all the stuff in response 6. NOTE that you may have to try different media, and if you are using el-cheapo media, such as one of many disks in a stack with no cases, some of them are likely to be defective - that's why they're so cheap. If everything looks right in your situation, if you can try the Sony drive on another computer, do that. If it doesn't work properly on that other computer either, the drive is faulty - return it to where you got it if they have a limited time exchange policy and get another one, or rma it to the manufacturer which may not be worth the shipping cost, or throw it away and get another one.

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Aegis, "Having both drives on the same cable will not cause problems, but it will slow down copying from one to the other. Is reading from the drive working ok?" Is this NOT a problem? So, yes it CAN be done, but is NOT recommended and NOT problem-free. http://www.google.com/search?q=opti... J. j e r u v y a t y a h o o d o t c o m

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Did some more testing - reading from the drive is ok. However burning from the drive always fails when both drives are on the same IDE cable. If I install the drive on the IDE cable by itself, it burns without failure

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The most likely cause of your problem is you have a damaged IDE cable. You must use an 80 wire one because at the very least the Sony drive requires it in order to work properly. It is common to un-intentionally damage IDE data cables, especially while removing them - the 80 wire ones are more fragile. What usually happens is the cable is ripped at either edge and the wires there are either damaged or severed, often right at a connector or under it's cable clamp there, where it's hard to see - if a wire is severed but it's ends are touching, the connection is intermittant. Another common thing is for the data cable to be separated from the connector contacts a bit after you have removed a cable - there should be no gap between the data cable and the connector - if there is press the cable against the connector to eliminate the gap. 80 wire data cables are also easily damaged at either edge if the cable is sharply creased at a fold in the cable. Try another data cable if in doubt.

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I dont know what the hell is wrong with Sony DRU-190A, I'm begining to loose my faith in Sony, this is the third replacment I'm getting and none of them burn. it just fails befor even start. some of the things I've tried: updateing the firmware that did it for one time burn. had to change mainboard cpu ram and .. so tried useing other application like clone dvd rather than just nero and as i mentioned this is the third replacement not working

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One drive defective - possible. Three drives defective - virtually impossible. You should have come to that conclusion when you got the second one. Something else is wrong. Did you check out all the stuff in response 6? Did you look for error messages in the event viewer (see response 1) after you tried to burn? Do you have another computer you can try this on, or can you try it on a friend's computer? If you were not having problems with anything else, it would not have been caused by your ram.

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