Windows 7: BSOD: seems to be when copying files

*** WARNING: Unable to verify timestamp for asmtxhci.sys
*** ERROR: Module load completed but symbols could not be loaded for asmtxhci.sys
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*                        Bugcheck Analysis                                    *
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Use !analyze -v to get detailed debugging information.

BugCheck 1000007E, {ffffffffc0000005, fffff8800453c9f2, fffff8800302d918, fffff8800302d170}

Probably caused by : asmtxhci.sys ( asmtxhci+249f2 )

Followup: MachineOwner
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1: kd> !analyze -v
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SYSTEM_THREAD_EXCEPTION_NOT_HANDLED_M (1000007e)
This is a very common bugcheck.  Usually the exception address pinpoints
the driver/function that caused the problem.  Always note this address
as well as the link date of the driver/image that contains this address.
Some common problems are exception code 0x80000003.  This means a hard
coded breakpoint or assertion was hit, but this system was booted
/NODEBUG.  This is not supposed to happen as developers should never have
hardcoded breakpoints in retail code, but ...
If this happens, make sure a debugger gets connected, and the
system is booted /DEBUG.  This will let us see why this breakpoint is
happening.
Arguments:
Arg1: ffffffffc0000005, The exception code that was not handled
Arg2: fffff8800453c9f2, The address that the exception occurred at
Arg3: fffff8800302d918, Exception Record Address
Arg4: fffff8800302d170, Context Record Address

Debugging Details:
------------------


EXCEPTION_CODE: (NTSTATUS) 0xc0000005 - The instruction at 0x%08lx referenced memory at 0x%08lx. The memory could not be %s.

FAULTING_IP: 
asmtxhci+249f2
fffff880`0453c9f2 4d8b4318        mov     r8,qword ptr [r11+18h]

EXCEPTION_RECORD:  fffff8800302d918 -- (.exr 0xfffff8800302d918)
ExceptionAddress: fffff8800453c9f2 (asmtxhci+0x00000000000249f2)
   ExceptionCode: c0000005 (Access violation)
  ExceptionFlags: 00000000
NumberParameters: 2
   Parameter[0]: 0000000000000000
   Parameter[1]: 0000000000000018
Attempt to read from address 0000000000000018

CONTEXT:  fffff8800302d170 -- (.cxr 0xfffff8800302d170)
rax=fffff8800456fe60 rbx=00000000000000a0 rcx=fffffa800c8d1010
rdx=0000000000000000 rsi=0000000000000001 rdi=fffffa80093ae9c8
rip=fffff8800453c9f2 rsp=fffff8800302db50 rbp=0000000000000080
 r8=fffffa80093ae9c8  r9=fffffa800c8d1010 r10=00000000000000d8
r11=0000000000000000 r12=fffffa8009296058 r13=fffff88004561af0
r14=0000000000000000 r15=fffff80000b96080
iopl=0         nv up ei ng nz na po nc
cs=0010  ss=0018  ds=002b  es=002b  fs=0053  gs=002b             efl=00010286
asmtxhci+0x249f2:
fffff880`0453c9f2 4d8b4318        mov     r8,qword ptr [r11+18h] ds:002b:00000000`00000018=????????????????
Resetting default scope

CUSTOMER_CRASH_COUNT:  1

PROCESS_NAME:  System

CURRENT_IRQL:  0

ERROR_CODE: (NTSTATUS) 0xc0000005 - The instruction at 0x%08lx referenced memory at 0x%08lx. The memory could not be %s.

EXCEPTION_PARAMETER1:  0000000000000000

EXCEPTION_PARAMETER2:  0000000000000018

READ_ADDRESS: GetPointerFromAddress: unable to read from fffff8000330a100
GetUlongFromAddress: unable to read from fffff8000330a1c0
 0000000000000018 Nonpaged pool

FOLLOWUP_IP: 
asmtxhci+249f2
fffff880`0453c9f2 4d8b4318        mov     r8,qword ptr [r11+18h]

BUGCHECK_STR:  0x7E

DEFAULT_BUCKET_ID:  NULL_CLASS_PTR_DEREFERENCE

LAST_CONTROL_TRANSFER:  from fffffa80092962b8 to fffff8800453c9f2

STACK_TEXT:  
fffff880`0302db50 fffffa80`092962b8 : fffff880`04564603 00000000`00000000 00000000`00000000 fffffa80`093ae9c8 : asmtxhci+0x249f2
fffff880`0302db58 fffff880`04564603 : 00000000`00000000 00000000`00000000 fffffa80`093ae9c8 fffff880`0454894c : 0xfffffa80`092962b8
fffff880`0302db60 00000000`00000000 : 00000000`00000000 fffffa80`093ae9c8 fffff880`0454894c fffffa80`0c8d1010 : asmtxhci+0x4c603


SYMBOL_STACK_INDEX:  0

SYMBOL_NAME:  asmtxhci+249f2

FOLLOWUP_NAME:  MachineOwner

MODULE_NAME: asmtxhci

IMAGE_NAME:  asmtxhci.sys

DEBUG_FLR_IMAGE_TIMESTAMP:  4de6f522

STACK_COMMAND:  .cxr 0xfffff8800302d170 ; kb

FAILURE_BUCKET_ID:  X64_0x7E_asmtxhci+249f2

BUCKET_ID:  X64_0x7E_asmtxhci+249f2

Followup: MachineOwner
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