Keep getting different BSOD seemed to start happening randomly

[B247]

A few days ago I started getting BSOD, the STOP code changes every time and seemed to start happening randomly. It doesn't seem to happen when I do anything specific just a while after I start up Windows. I started having issues with BSOD a couple of months ago but I thought I had fixed it by reinstalling Windows. Clearly that was not the case.

I have tested the RAM using memtest86 but it showed no errors even after running overnight. I also sometimes seem to have issues with the monitor not picking up any signal after turning the computer on.

Attached are the minidumps.

 

[Arc]

Update your ATI/AMD display driver.
You can get it from the link in our forum, http://www.sevenforums.com/graphic-...alyst-video-driver-windows-7-a.html#post17671, or you may go to AMD Graphics Driver and Software and opt for Automatically Detect and Install the appropriate driver for your card.

During installation, you may opt for advanced installation, and install the display driver only, not the Catalyst Control Center.

Test your RAM modules for possible errors.
How to Test and Diagnose RAM Issues with Memtest86+
Run memtest for at least 8 passes, preferably overnight.

Stress test the Graphics Card using Furmark.
Video Card - Stress Test with Furmark

Stress test the CPU.
Hardware - Stress Test With Prime95

Let us know the results.

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*                        Bugcheck Analysis                                    *
*                                                                             *
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Use !analyze -v to get detailed debugging information.

BugCheck 3B, {c0000005, fffff960000eb61a, fffff8800aac8080, 0}

Probably caused by : hardware ( win32k!NtUserDispatchMessage+6a )

Followup: MachineOwner
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0: kd> !analyze -v
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*                                                                             *
*                        Bugcheck Analysis                                    *
*                                                                             *
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SYSTEM_SERVICE_EXCEPTION (3b)
An exception happened while executing a system service routine.
Arguments:
Arg1: 00000000c0000005, Exception code that caused the bugcheck
Arg2: fffff960000eb61a, Address of the instruction which caused the bugcheck
Arg3: fffff8800aac8080, 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: 
win32k!NtUserDispatchMessage+6a
fffff960`000eb61a 0233            add     dh,byte ptr [rbx]

CONTEXT:  fffff8800aac8080 -- (.cxr 0xfffff8800aac8080)
rax=0000000000000001 rbx=0000000000000001 rcx=fffff8800aac8a20
rdx=fffff900c062ae80 rsi=0000000000000000 rdi=0000000000000020
rip=fffff960000eb61a rsp=fffff8800aac8a60 rbp=fffff8800aac8b60
 r8=fffff80000b96080  r9=fffff8800aac8c70 r10=fffff8800aac8720
r11=fffff8800aac8a40 r12=0000000074d31aa0 r13=00000000001efd20
r14=00000000001ee900 r15=0000000074d22450
iopl=0         nv up ei ng nz na po nc
cs=0010  ss=0018  ds=002b  es=002b  fs=0053  gs=002b             efl=00010286
win32k!NtUserDispatchMessage+0x6a:
fffff960`000eb61a 0233            add     dh,byte ptr [rbx] ds:002b:00000000`00000001=??
Resetting default scope

CUSTOMER_CRASH_COUNT:  1

DEFAULT_BUCKET_ID:  WIN7_DRIVER_FAULT

BUGCHECK_STR:  0x3B

PROCESS_NAME:  firefox.exe

CURRENT_IRQL:  0

MISALIGNED_IP: 
win32k!NtUserDispatchMessage+6a
fffff960`000eb61a 0233            add     dh,byte ptr [rbx]

LAST_CONTROL_TRANSFER:  from fffff80002c7ae13 to fffff960000eb61a

STACK_TEXT:  
fffff880`0aac8a60 fffff800`02c7ae13 : 00000000`00000000 fffff880`0aac8b60 00000000`000001e0 00000000`74d31aa0 : win32k!NtUserDispatchMessage+0x6a
fffff880`0aac8ae0 00000000`74d7013a : 00000000`00000000 00000000`00000000 00000000`00000000 00000000`00000000 : nt!KiSystemServiceCopyEnd+0x13
00000000`001edf18 00000000`00000000 : 00000000`00000000 00000000`00000000 00000000`00000000 00000000`00000000 : 0x74d7013a


FOLLOWUP_IP: 
win32k!NtUserDispatchMessage+6a
fffff960`000eb61a 0233            add     dh,byte ptr [rbx]

SYMBOL_STACK_INDEX:  0

SYMBOL_NAME:  win32k!NtUserDispatchMessage+6a

FOLLOWUP_NAME:  MachineOwner

IMAGE_NAME:  hardware

DEBUG_FLR_IMAGE_TIMESTAMP:  0

STACK_COMMAND:  .cxr 0xfffff8800aac8080 ; kb

MODULE_NAME: hardware

FAILURE_BUCKET_ID:  X64_IP_MISALIGNED

BUCKET_ID:  X64_IP_MISALIGNED

Followup: MachineOwner
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