pb de gravure avec nero 7

slt!
voila mon pb, je n arrive pas a graver mes dvd... lol sans qu'il me donne des message d erreur. Alors, qu'il ya quelques jrs, sa marchait bien.
voilou le journal..
si quelqu'un s' est pourquoi...

IA32
WinAspi: -
ahead WinASPI: File 'C:\Program Files\Nero\Nero 7\Core\Wnaspi32.dll': Ver=2.0.1.74, size=164112 bytes, created 02/11/2004 13:54:32

NT-SPTI used
Nero Version: 7.0.0.0 (Nero Express)
Recorder: <_NEC DVD+RW ND-2100AD> Version: 1.26 - HA 1 TA 0 - 7.0.0.0
Adapter driver: <IDE> HA 1
Drive buffer : 2048kB
Bus Type : default (0) -> ATAPI, detected: ?
CD-ROM: <SAMSUNG DVD-ROM SD-616E >Version: F503 - HA 1 TA 1 - 7.0.0.0
Adapter driver: <IDE> HA 1

=== Scsi-Device-Map ===
CdRomPeripheral : _NEC DVD+RW ND-2100AD atapi Port 2 ID 0 DMA: On
CdRomPeripheral : SAMSUNG DVD-ROM SD-616E atapi Port 2 ID 1 DMA: On
DiskPeripheral : ST3120022A atapi Port 3 ID 0 DMA: On

=== CDRom-Device-Map ===
_NEC DVD+RW ND-2100AD E: CDRom0
SAMSUNG DVD-ROM SD-616E F: CDRom1
=======================

AutoRun : 1
Excluded drive IDs:
WriteBufferSize: 83886080 (0) Byte
ShowDrvBufStat : 0
BUFE : 0
Physical memory : 1023MB (1048044kB)
Free physical memory: 588MB (602976kB)
Memory in use : 42 %
Uncached PFiles: 0x0
Use Inquiry : 1
Global Bus Type: default (0)
Check supported media : Disabled (0)

11.2.2006
Compilation UDF/ISO
20:33:24 #1 Phase 112 File dlgbrnst.cpp, Line 1724
DVD-Video files reallocation started

20:33:24 #2 Phase 114 File dlgbrnst.cpp, Line 1724
DVD-Video files reallocation completed (no file modified)

20:33:24 #3 Text 0 File Isodoc.cpp, Line 6410
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 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

20:33:24 #4 Phase 111 File dlgbrnst.cpp, Line 1724
DVD-Video files sorted

20:33:24 #5 Text 0 File ThreadedTransfer.cpp, Line 525
ReadBuffer-Pipe got 81920KB of Memory

20:33:24 #6 Text 0 File Reader.cpp, Line 124
Reader running

20:33:24 #7 Text 0 File Writer.cpp, Line 113
Writer E: _NEC DVD+RW ND-2100AD running

20:33:24 #8 ISO9660GEN -11 File Geniso.cpp, Line 3304
First writeable address = 0 (0x00000000)

20:33:24 #9 ISO9660GEN -11 File Geniso.cpp, Line 3304
First writeable address = 0 (0x00000000)

20:33:24 #10 Text 0 File Burncd.cpp, Line 3301
Turn on Disc-At-Once, using DVD media

20:33:24 #11 Text 0 File DlgWaitCD.cpp, Line 277
Last possible write address on media: 2295103 (510:01.28, 4482MB)
Last address to be written: 1933887 (429:45.12, 3777MB)

20:33:24 #12 Text 0 File DlgWaitCD.cpp, Line 289
Write in overburning mode: NO (enabled: CD)

20:33:24 #13 Text 0 File DlgWaitCD.cpp, Line 2568
Recorder: _NEC DVD+RW ND-2100AD, Media type: DVD+R

20:33:24 #14 Text 0 File DlgWaitCD.cpp, Line 456
>>> Protocol of DlgWaitCD activities: <<<
=========================================

20:33:24 #15 Text 0 File ThreadedTransferInterface.cpp, Line 846
Setup items (after recorder preparation)
0: TRM_DATA_MODE1 ()
2 indices, index0 (150) not provided
original disc pos #0 + 1933888 (1933888) = #1933888/429:45.13
relocatable, disc pos for caching/writing not required/ required, no patch infos
-> TRM_DATA_MODE1, 2048, config 0, wanted index0 0 blocks, length 1933888 blocks [E: _NEC DVD+RW ND-2100AD]
--------------------------------------------------------------

20:33:24 #16 Text 0 File ThreadedTransferInterface.cpp, Line 1058
Prepare recorder [E: _NEC DVD+RW ND-2100AD] for write in CUE-sheet-DAO
DAO infos:
==========
MCN: ""
TOCType: 0x00; Session Closed, disc fixated
Tracks 1 to 1:
1: TRM_DATA_MODE1, 2048/0x00, FilePos 0 0 3960602624, ISRC ""
DAO layout:
===========
__Start_|____Track_|_Idx_|_CtrlAdr_|_RecDep__________
0 | lead-in | 0 | 0x41 | 0x00
0 | 1 | 0 | 0x41 | 0x00
0 | 1 | 1 | 0x41 | 0x00
1933888 | lead-out | 1 | 0x41 | 0x00

20:33:24 #17 Text 0 File SCSIPassThrough.cpp, Line 34
SPTILockVolume - completed successfully for FCTL_LOCK_VOLUME

20:33:24 #18 Phase 24 File dlgbrnst.cpp, Line 1724
Caching of files started

20:33:24 #19 Text 0 File Burncd.cpp, Line 4129
Cache writing successful.

20:33:24 #20 Phase 25 File dlgbrnst.cpp, Line 1724
Caching of files completed

20:33:24 #21 Phase 36 File dlgbrnst.cpp, Line 1724
Burn process started at 2,4x (3 324 Ko/s)

20:33:24 #22 Text 0 File ThreadedTransferInterface.cpp, Line 2669
Verifying disc position of item 0 (relocatable, disc pos, no patch infos, orig at #0): write at #0

20:33:24 #23 SPTI -1066 File SCSIPassThrough.cpp, Line 306
CdRom0: SCSIStatus(x02) WinError(0) NeroError(-1066)
Sense Key: 0x05 (KEY_ILLEGAL_REQUEST)
Sense Code: 0x24
Sense Qual: 0x00
CDB Data: 0xAD 00 00 00 00 00 00 00 08 04 00 00
Sense Area: 0x70 00 05 00 00 00 00 0A 00 00 00 00 24 00 00 C0 00 07
Buffer x051ab400: Len x804

20:33:25 #24 Text 0 File DVDR.cpp, Line 6068
Drive: _NEC DVD+RW ND-2100AD
Book Type request [gen]: DVD-ROM, write to EEPROM
Changing the Book Type was finished successfully, return code 0

20:33:25 #25 CDR -1207 File DVDR.cpp, Line 5211
Book Type automatically set to: DVD-ROM

20:33:25 #26 Text 0 File DVDPlusRW.cpp, Line 666
Start write address at LBA 0
DVD high compatibility mode: Yes

20:33:36 #27 SPTI -1106 File SCSIPassThrough.cpp, Line 306
CdRom0: SCSIStatus(x02) WinError(0) NeroError(-1106)
Sense Key: 0x03 (KEY_MEDIUM_ERROR)
Sense Code: 0x73
Sense Qual: 0x03
CDB Data: 0x2A 00 00 00 00 00 00 00 20 00 00 00
Sense Area: 0x70 00 03 00 00 00 00 0A 00 00 00 00 73 03
Buffer x069f0000: Len x10000
0x00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0x00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0x00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00

20:33:36 #28 CDR -1106 File Writer.cpp, Line 302
Power calibration error
E: _NEC DVD+RW ND-2100AD

20:33:37 #29 Text 0 File ThreadedTransfer.cpp, Line 228
all writers idle, stopping conversion

20:33:37 #30 Text 0 File ThreadedTransfer.cpp, Line 222
conversion idle, stopping reader

20:33:37 #31 Phase 127 File dlgbrnst.cpp, Line 1724
Generating DVD high compatibility borders

20:33:37 #32 Phase 129 File dlgbrnst.cpp, Line 1724
Generating DVD borders completed successfully

20:33:37 #33 Text 0 File DVDR.cpp, Line 6068
Drive: _NEC DVD+RW ND-2100AD
Book Type request [gen]: DVD+R, write to EEPROM
Changing the Book Type was finished successfully, return code 0

20:33:37 #34 Phase 38 File dlgbrnst.cpp, Line 1724
Burn process failed at 2,4x (3 324 Ko/s)


Existing drivers:
File 'Drivers\ASPI32.SYS': Ver=4.60 (1021), size=25244 bytes, created 03/12/2004 10:40:20
File 'Drivers\PXHELP20.SYS': Ver=2.03.18a, size=20576 bytes, created 25/06/2005 18:26:14 (Prassi/Veritas driver for win 2K)

Registry Keys:
HKLM\Software\Microsoft\Windows NT\CurrentVersion\WinLogon\AllocateCDROMs : 0 (Security Option)