kd> sxe ld:nv4_mini.sys
kd> g
----- cut uneeded part of log ----------------
(ntoskrnl\mm\ARM3\sysldr.c:170) Loading: \SystemRoot\system32\drivers\nv4_mini.sys at F7051000 with 604 pages
(ntoskrnl\mm\ARM3\sysldr.c:170) Loading: \SystemRoot\system32\drivers\VIDEOPRT.SYS at F7032000 with 1f pages
(ntoskrnl\mm\ARM3\sysldr.c:2592) ImageBase 0xF7051000 ImageSize 0x603e40 Section 9 VA 0x5e2680 Raw 0x217c0 virt 0x217a4
nt!DebugService2+0xe:
8058dea8 cc              int     3
kd> bp videoprt!VideoPortRegisterBugcheckCallback
kd> bp videoprt!VideoPortGetDeviceData
kd> g
(win32ss\drivers\videoprt\registry.c:315) Failed to open device software key. Status 0xc0000034
(ntoskrnl\io\pnpmgr\pnpres.c:648) Resource conflict: IRQ (0xb 0xb vs. 0xb 0xb)
(hal\halx86\legacy\bus\pcibus.c:787) HAL: No PCI Resource Adjustment done! Hardware may malfunction
(ntoskrnl\io\pnpmgr\pnpres.c:648) Resource conflict: IRQ (0xb 0xb vs. 0xb 0xb)
Breakpoint 2 hit
VIDEOPRT!VideoPortRegisterBugcheckCallback:
f7044150 8bff            mov     edi,edi
kd> kv
*** ERROR: Module load completed but symbols could not be loaded for nv4_mini.sys
ChildEBP RetAddr  Args to Child              
f76a7790 f762f2f1 b7ccf224 000000ea f707bd20 VIDEOPRT!VideoPortRegisterBugcheckCallback (FPO: [Non-Fpo]) (CONV: stdcall) [D:\videprt_test\win32ss\drivers\videoprt\videoprt.c @ 1658]
WARNING: Stack unwind information not available. Following frames may be wrong.
f76a77d8 80576eb5 f76a7aa8 8058974d 00000000 nv4_mini+0x5de2f1
f76a7898 804475d7 00000000 f76a7a2c f76a7914 nt!_RTC_CheckStackVars+0xd5 (FPO: [Non-Fpo]) (CONV: fastcall) [D:\videprt_test\sdk\lib\runtmchk\rtcapi.c @ 153]
f76a78fc f76a7928 8056dd68 8056dda3 f76a79f8 nt!NtQuerySystemInformation+0x197 (FPO: [Non-Fpo]) (CONV: stdcall) [D:\videprt_test\ntoskrnl\ex\sysinfo.c @ 3010]
00000000 00000000 00000000 00000000 00000000 0xf76a7928
kd> r
eax=f7044150 ebx=80637420 ecx=f7046f54 edx=f762efa4 esi=f76a79f8 edi=f76a7a60
eip=f7044150 esp=f76a7794 ebp=b7ccf224 iopl=0         nv up ei ng nz na pe nc
cs=0008  ss=0010  ds=0023  es=0023  fs=0030  gs=0000             efl=00200286
VIDEOPRT!VideoPortRegisterBugcheckCallback:
f7044150 8bff            mov     edi,edi
kd> !analyze -v
Last event: Hit breakpoint 2
  debugger time: Tue Aug 26 11:13:26.583 2025 (UTC - 8:00)
kd> g
WARNING:  VideoPortRegisterBugcheckCallback at win32ss\drivers\videoprt\videoprt.c:1659 is UNIMPLEMENTED!
Breakpoint 0 hit
Breakpoint 1 hit
VIDEOPRT!IntVideoPortFindAdapter+0x1ea:
f704262a ba01000000      mov     edx,1
kd> kv
ChildEBP RetAddr  Args to Child              
f76a7ae0 f7037749 b7d1be18 b7d16030 b7ccf040 VIDEOPRT!IntVideoPortFindAdapter+0x1ea (FPO: [Non-Fpo]) (CONV: stdcall) [D:\videprt_test\win32ss\drivers\videoprt\videoprt.c @ 524]
f76a7b50 f7036b43 b7ccf040 b7dec008 f76a7b98 VIDEOPRT!IntVideoPortPnPStartDevice+0x329 (FPO: [Non-Fpo]) (CONV: stdcall) [D:\videprt_test\win32ss\drivers\videoprt\dispatch.c @ 971]
f76a7b74 f7036fbd b7ccf040 b7dec008 b7ccf0f8 VIDEOPRT!IntVideoPortDispatchFdoPnp+0x83 (FPO: [Non-Fpo]) (CONV: stdcall) [D:\videprt_test\win32ss\drivers\videoprt\dispatch.c @ 1094]
f76a7b88 8048a5c7 b7ccf040 b7dec008 f76a7c5c VIDEOPRT!IntVideoPortDispatchPnp+0x2d (FPO: [Non-Fpo]) (CONV: stdcall) [D:\videprt_test\win32ss\drivers\videoprt\dispatch.c @ 1163]
f76a7bb4 8049ce3b f76a7c6c f76a7c18 cccccccc nt!IofCallDriver+0xc7 (FPO: [Non-Fpo]) (CONV: fastcall) [D:\videprt_test\ntoskrnl\io\iomgr\irp.c @ 1286]
f76a7c04 8049da77 b7ddddb0 f76a7c38 f76a7c64 nt!IopSynchronousCall+0x12b (FPO: [Non-Fpo]) (CONV: cdecl) [D:\videprt_test\ntoskrnl\io\pnpmgr\pnpirp.c @ 67]
f76a7c6c 80496465 b7dddc48 f76a7d10 f76a7cd0 nt!PiIrpStartDevice+0x117 (FPO: [Non-Fpo]) (CONV: cdecl) [D:\videprt_test\ntoskrnl\io\pnpmgr\pnpirp.c @ 104]
f76a7cc4 8049826c b7e0c740 f76a7d88 f76a7d1c nt!PiDevNodeStateMachine+0x125 (FPO: [Non-Fpo]) (CONV: cdecl) [D:\videprt_test\ntoskrnl\io\pnpmgr\devaction.c @ 2367]
f76a7d10 8044c93a 00000000 f76abc7c f76a7d94 nt!PipDeviceActionWorker+0x15c (FPO: [Non-Fpo]) (CONV: stdcall) [D:\videprt_test\ntoskrnl\io\pnpmgr\devaction.c @ 2586]
f76a7d88 80540fd6 00000001 f76abc7c f76a7dcc nt!ExpWorkerThreadEntryPoint+0x1ca (FPO: [Non-Fpo]) (CONV: stdcall) [D:\videprt_test\ntoskrnl\ex\work.c @ 158]
f76a7dbc 8056d183 8044c770 00000001 8000003b nt!PspSystemThreadStartup+0x76 (FPO: [Non-Fpo]) (CONV: stdcall) [D:\videprt_test\ntoskrnl\ps\thread.c @ 156]
f76a7ddc 80540f5f 8044c770 00000001 10558b00 nt!KiThreadStartup+0x63 (FPO: [Non-Fpo]) (CONV: stdcall) [D:\videprt_test\ntoskrnl\ke\i386\thrdini.c @ 78]
f76a7de0 8044c76f 00000001 10558b00 0000027f nt!PspCreateThread+0xf0f (CONV: stdcall)
f76a7de4 00000000 10558b00 0000027f 00000000 nt!ExpWorkerThreadBalanceManager+0x29f (CONV: stdcall)
kd> r
eax=00000037 ebx=80637420 ecx=804cda5c edx=ffdff000 esi=f76a79f8 edi=f76a7ae0
eip=f704262a esp=f76a79f8 ebp=f76a7ae0 iopl=0         nv up ei pl nz na po nc
cs=0008  ss=0010  ds=0023  es=0023  fs=0030  gs=0000             efl=00000202
VIDEOPRT!IntVideoPortFindAdapter+0x1ea:
f704262a ba01000000      mov     edx,1
kd> !thread
THREAD b7de6db0  Cid 0004.0024  Teb: 00000000 Win32Thread: 00000000 RUNNING on processor 0
IRP List:
    b7dec008: (0006,0190) Flags: 00000000  Mdl: 00000000
Not impersonating
DeviceMap                 e1002520
Owning Process            b7de9bb0       Image:         System
Attached Process          N/A            Image:         N/A
Wait Start TickCount      967            Ticks: 13 (0:00:00:00.194)
Context Switch Count      52             
UserTime                  00:00:00.000
KernelTime                00:00:00.929
Start Address nt!ExpWorkerThreadEntryPoint (0x8044c770)
Stack Init f76a8000 Current f76a7070 Base f76a8000 Limit f76a5000 Call 0
Priority 12 BasePriority 12 PriorityDecrement 0
ChildEBP RetAddr  Args to Child              
f76a7ae0 f7037749 b7d1be18 b7d16030 b7ccf040 VIDEOPRT!IntVideoPortFindAdapter+0x1ea (FPO: [Non-Fpo]) (CONV: stdcall) [D:\videprt_test\win32ss\drivers\videoprt\videoprt.c @ 524]
f76a7b50 f7036b43 b7ccf040 b7dec008 f76a7b98 VIDEOPRT!IntVideoPortPnPStartDevice+0x329 (FPO: [Non-Fpo]) (CONV: stdcall) [D:\videprt_test\win32ss\drivers\videoprt\dispatch.c @ 971]
f76a7b74 f7036fbd b7ccf040 b7dec008 b7ccf0f8 VIDEOPRT!IntVideoPortDispatchFdoPnp+0x83 (FPO: [Non-Fpo]) (CONV: stdcall) [D:\videprt_test\win32ss\drivers\videoprt\dispatch.c @ 1094]
f76a7b88 8048a5c7 b7ccf040 b7dec008 f76a7c5c VIDEOPRT!IntVideoPortDispatchPnp+0x2d (FPO: [Non-Fpo]) (CONV: stdcall) [D:\videprt_test\win32ss\drivers\videoprt\dispatch.c @ 1163]
f76a7bb4 8049ce3b f76a7c6c f76a7c18 cccccccc nt!IofCallDriver+0xc7 (FPO: [Non-Fpo]) (CONV: fastcall) [D:\videprt_test\ntoskrnl\io\iomgr\irp.c @ 1286]
f76a7c04 8049da77 b7ddddb0 f76a7c38 f76a7c64 nt!IopSynchronousCall+0x12b (FPO: [Non-Fpo]) (CONV: cdecl) [D:\videprt_test\ntoskrnl\io\pnpmgr\pnpirp.c @ 67]
f76a7c6c 80496465 b7dddc48 f76a7d10 f76a7cd0 nt!PiIrpStartDevice+0x117 (FPO: [Non-Fpo]) (CONV: cdecl) [D:\videprt_test\ntoskrnl\io\pnpmgr\pnpirp.c @ 104]
f76a7cc4 8049826c b7e0c740 f76a7d88 f76a7d1c nt!PiDevNodeStateMachine+0x125 (FPO: [Non-Fpo]) (CONV: cdecl) [D:\videprt_test\ntoskrnl\io\pnpmgr\devaction.c @ 2367]
f76a7d10 8044c93a 00000000 f76abc7c f76a7d94 nt!PipDeviceActionWorker+0x15c (FPO: [Non-Fpo]) (CONV: stdcall) [D:\videprt_test\ntoskrnl\io\pnpmgr\devaction.c @ 2586]
f76a7d88 80540fd6 00000001 f76abc7c f76a7dcc nt!ExpWorkerThreadEntryPoint+0x1ca (FPO: [Non-Fpo]) (CONV: stdcall) [D:\videprt_test\ntoskrnl\ex\work.c @ 158]
f76a7dbc 8056d183 8044c770 00000001 8000003b nt!PspSystemThreadStartup+0x76 (FPO: [Non-Fpo]) (CONV: stdcall) [D:\videprt_test\ntoskrnl\ps\thread.c @ 156]
f76a7ddc 80540f5f 8044c770 00000001 10558b00 nt!KiThreadStartup+0x63 (FPO: [Non-Fpo]) (CONV: stdcall) [D:\videprt_test\ntoskrnl\ke\i386\thrdini.c @ 78]
f76a7de0 8044c76f 00000001 10558b00 0000027f nt!PspCreateThread+0xf0f (CONV: stdcall)
f76a7de4 00000000 10558b00 0000027f 00000000 nt!ExpWorkerThreadBalanceManager+0x29f (CONV: stdcall)

kd> dd b7d1be18 L20
b7d1be18  00a80004 b7ccf040 00000010 f7051000
b7d1be28  00604000 b7ce6f60 b7d1bec0 00180014
b7d1be38  e1084f10 805f5f28 00000000 f76303e0
b7d1be48  00000000 f7037c20 f7036d10 80474350
b7d1be58  f7036350 80474350 80474350 80474350
b7d1be68  80474350 80474350 80474350 80474350
b7d1be78  80474350 80474350 80474350 80474350
b7d1be88  f70363f0 80474350 f70363f0 80474350
kd> dd b7d16030 L20
b7d16030  00000054 00000005 f762f1d0 f762fc70
b7d16040  f705d430 f762ab10 00001028 00000001
b7d16050  f7063e00 f705d450 00000000 f707c310
b7d16060  f7630b90 f7629e40 f7630920 00000000
b7d16070  00000000 00000000 00000000 00000001
b7d16080  00000000 00000000 00660064 e1069b20
b7d16090  0203000e 50414d52 00000000 b7cd57c0
b7d160a0  ffffff04 8040dda4 02030003 50414d52
kd> u nv4_mini!HwFindAdapter
Couldn't resolve error at 'nv4_mini!HwFindAdapter'