REGISTRY_ERROR (51)
Something has gone badly wrong with the registry. If a kernel debugger is available, get a stack trace. It can also indicate that the registry got an I/O error while trying to read one of its files, so it can be caused by hardware problems or filesystem corruption. It may occur due to a failure in a refresh operation, which is used only in by the security system, and then only when resource limits are encountered.
Arguments:
Arg1: 00000003, (reserved)
Arg2: 00000004, (reserved)
Arg3: e82372f8, depends on where Windows bugchecked, may be pointer to hive
Arg4: 00000000, depends on where Windows bugchecked, may be return code of HvCheckHive if the hive is corrupt.

0: kd> !reg hivelist

-------------------------------------------------------------------------------------------------------------
| HiveAddr |Stable Length|Stable Map|Volatile Length|Volatile Map|MappedViews|PinnedViews|U(Cnt)| BaseBlock | FileName
-------------------------------------------------------------------------------------------------------------
| e1008a68 | 13000 | e1008ac8 | 1000 | e1008c04 | 0 | 0 | 0| e1015000 | <NONAME>
| e101a4e0 | 901000 | e1023000 | 40000 | e101a67c | 202 | 0 | 0| e101e000 | SYSTEM
| e1938188 | d000 | e19381e8 | 4000 | e1938324 | 0 | 0 | 0| e193a000 | <NONAME>
| e1968290 | 8000 | e19682f0 | 0 | 00000000 | 3 | 0 | 0| e1d39000 | \SystemRoot\System32\Config\SAM
| e1cab270 | 3d000 | e1cab2d0 | 1000 | e1cab40c | 16 | 0 | 0| e1d32000 | emRoot\System32\Config\SECURITY
| e1c9f448 | 3f70000 | e1e37000 | 1000 | e1c9f5e4 | 256 | 0 | 0| e1d71000 | temRoot\System32\Config\DEFAULT
| e1d75a80 | 7d5d000 | e1ee3000 | 23000 | e1d75c1c | 254 | 12 | 0| e1d37000 | emRoot\System32\Config\SOFTWARE
| e1ba30d0 | 37000 | e1ba3130 | 1000 | e1ba326c | 17 | 0 | 0| e1b9e000 | tings\NetworkService\ntuser.dat
| e1ba8060 | 1000 | e1ba80c0 | 0 | 00000000 | 1 | 0 | 0| e1b8e000 | \Microsoft\Windows\UsrClass.dat
| e1afc068 | 3b000 | e1afc0c8 | 1000 | e1afc204 | 17 | 0 | 0| e1b3d000 | ettings\LocalService\ntuser.dat
| e1d6e2a0 | 1000 | e1d6e300 | 0 | 00000000 | 1 | 0 | 0| e1b39000 | \Microsoft\Windows\UsrClass.dat
[...]
| e82372f8 | 106000 | e8237358 | 0 | 00000000 | 55 | 4 | 0| e514c000 | ings\User123\NTUSER.DAT
[…]
————————————————————————————————————-

0: kd> dt _CMHIVE e82372f8
nt!_CMHIVE
+0x000 Hive : _HHIVE
+0x2d0 FileHandles : [3] 0x80002234 Void
+0x2dc NotifyList : _LIST_ENTRY [ 0x0 - 0x0 ]
+0x2e4 HiveList : _LIST_ENTRY [ 0xe7a38d64 - 0xe4d9fc9c ]
+0x2ec HiveLock : _EX_PUSH_LOCK
+0x2f0 ViewLock : 0x877b0120 _KGUARDED_MUTEX
+0x2f4 WriterLock : _EX_PUSH_LOCK
+0x2f8 FlusherLock : _EX_PUSH_LOCK
+0x2fc SecurityLock : _EX_PUSH_LOCK
+0x300 LRUViewListHead : _LIST_ENTRY [ 0xe6160170 - 0xe3d71978 ]
+0x308 PinViewListHead : _LIST_ENTRY [ 0xe2714fe0 - 0xe108d9e0 ]
+0x310 FileObject : 0x89ecf310 _FILE_OBJECT
+0x314 FileFullPath : _UNICODE_STRING "\Device\HarddiskVolumeX\Documents and Settings\User123\NTUSER.DAT"
+0×31c FileUserName : _UNICODE_STRING “\??\E:\Documents and Settings\User123\NTUSER.DAT”
+0×324 MappedViews : 0×37
+0×326 PinnedViews : 4
+0×328 UseCount : 0
+0×32c SecurityCount : 9
+0×330 SecurityCacheSize : 9
+0×334 SecurityHitHint : 0n0
+0×338 SecurityCache : 0xe74d5008 _CM_KEY_SECURITY_CACHE_ENTRY
+0×33c SecurityHash : [64] _LIST_ENTRY [ 0xe3f80228 - 0xe5901ef0 ]
+0×53c UnloadEvent : (null)
+0×540 RootKcb : (null)
+0×544 Frozen : 0 ”
+0×548 UnloadWorkItem : (null)
+0×54c GrowOnlyMode : 0 ”
+0×550 GrowOffset : 0
+0×554 KcbConvertListHead : _LIST_ENTRY [ 0xe823784c - 0xe823784c ]
+0×55c KnodeConvertListHead : _LIST_ENTRY [ 0xe8237854 - 0xe8237854 ]
+0×564 CellRemapArray : (null)
+0×568 Flags : 1
+0×56c TrustClassEntry : _LIST_ENTRY [ 0xe8237864 - 0xe8237864 ]
+0×574 FlushCount : 0
+0×578 CreatorOwner : (null)