Hello, welcome to SevenForums!
Both of the attached dumps point to and blame afd.sys which is the Ancillary Function Driver for WinSock. Most likely network related, so I commend updating your NIC drivers to its latest version.
Code:
*******************************************************************************
* *
* Bugcheck Analysis *
* *
*******************************************************************************
Use !analyze -v to get detailed debugging information.
BugCheck 3B, {c0000005, fffff8800151443a, fffff8800a1a3a50, 0}
Probably caused by : afd.sys ( afd!AfdTLReleaseIndications+1a )
Followup: MachineOwner
---------
0: kd> !analyze -v
*******************************************************************************
* *
* Bugcheck Analysis *
* *
*******************************************************************************
SYSTEM_SERVICE_EXCEPTION (3b)
An exception happened while executing a system service routine.
Arguments:
Arg1: 00000000c0000005, Exception code that caused the bugcheck
Arg2: fffff8800151443a, Address of the instruction which caused the bugcheck
Arg3: fffff8800a1a3a50, Address of the context record for the exception that caused the bugcheck
Arg4: 0000000000000000, zero.
Debugging Details:
------------------
EXCEPTION_CODE: (NTSTATUS) 0xc0000005 - The instruction at 0x%08lx referenced memory at 0x%08lx. The memory could not be %s.
FAULTING_IP:
afd!AfdTLReleaseIndications+1a
fffff880`0151443a 488b4108 mov rax,qword ptr [rcx+8]
CONTEXT: fffff8800a1a3a50 -- (.cxr 0xfffff8800a1a3a50)
rax=fffff88001516ba0 rbx=fffff8800a1a4790 rcx=0000000000000000
rdx=fffff8800a1a4450 rsi=fffffa800496e2f0 rdi=fffffa800aa7c200
rip=fffff8800151443a rsp=fffff8800a1a4430 rbp=fffff8800a1a4ca0
r8=0000000000000000 r9=0000000000000000 r10=0000000000000000
r11=0000000009a4cf3c r12=0000000000000000 r13=0000000000000000
r14=00000000ffffffff r15=fffff8800a1a4a88
iopl=0 nv up ei ng nz na po nc
cs=0010 ss=0018 ds=002b es=002b fs=0053 gs=002b efl=00010286
afd!AfdTLReleaseIndications+0x1a:
fffff880`0151443a 488b4108 mov rax,qword ptr [rcx+8] ds:002b:00000000`00000008=????????????????
Resetting default scope
CUSTOMER_CRASH_COUNT: 1
DEFAULT_BUCKET_ID: VISTA_DRIVER_FAULT
BUGCHECK_STR: 0x3B
PROCESS_NAME: firefox.exe
CURRENT_IRQL: 0
LAST_CONTROL_TRANSFER: from 0000000000000000 to fffff8800151443a
STACK_TEXT:
fffff880`0a1a4430 00000000`00000000 : 00000000`00000000 00000000`00000000 00000000`00000000 00000000`00000000 : afd!AfdTLReleaseIndications+0x1a
FOLLOWUP_IP:
afd!AfdTLReleaseIndications+1a
fffff880`0151443a 488b4108 mov rax,qword ptr [rcx+8]
SYMBOL_STACK_INDEX: 0
SYMBOL_NAME: afd!AfdTLReleaseIndications+1a
FOLLOWUP_NAME: MachineOwner
MODULE_NAME: afd
IMAGE_NAME: afd.sys
DEBUG_FLR_IMAGE_TIMESTAMP: 4efa9418
STACK_COMMAND: .cxr 0xfffff8800a1a3a50 ; kb
FAILURE_BUCKET_ID: X64_0x3B_afd!AfdTLReleaseIndications+1a
BUCKET_ID: X64_0x3B_afd!AfdTLReleaseIndications+1a
Followup: MachineOwner