random BSOD/freeze while using pc error code 0x000003

hi,
i got the problem of random BSOD/freeze. when my pc reboots sometimes he reboots again at the page loading operating system. and i keep receiving the BSOD/freez after that it appears in 20-30 min. the only way to stop the freezes or BSOD's are that when my memory is half available (i got 8GB DDR3 and it only shows 3.99GB available). the things i tried already are :
-newest driver of GPU
- memtest for 24h : no error's ( also tested the module's one by one and all together )
-reassamble the pc.
-forcing windows to use the 8GB of ram (in MSconfig)
-tested my memory on GPU
does anyone know how to fix it i'm out of idea's for the fix. here are the dump files

greets

The reason why your computer can access only 3.99 GB is that you have 32 bit OS.

Install 64 Bit OS and your computer will be able to access 8 GB Ram

i have a 64Bit OS because before the bluescreen i have the full 8GB available pic as proof for it

bump

1.Uninstall GIGABYTE Tools
2.Reinstall Nvidia drivers(latest version available).
3. Uninstall Valve Corporation(steam)
4.Run sfc/scannow
SFC /SCANNOW Command - System File Checker
5.After this perform this

Driver Verifier - Enable and Disable

Code:

*******************************************************************************
*                                                                             *
*                        Bugcheck Analysis                                    *
*                                                                             *
*******************************************************************************

Use !analyze -v to get detailed debugging information.

BugCheck C4, {f6, 518, fffffa800769a630, fffff88008101809}

*** WARNING: Unable to verify timestamp for gdrv.sys
*** ERROR: Module load completed but symbols could not be loaded for gdrv.sys

Code:

*******************************************************************************
*                                                                             *
*                        Bugcheck Analysis                                    *
*                                                                             *
*******************************************************************************

Use !analyze -v to get detailed debugging information.

BugCheck 3B, {c0000005, fffff88004ff0d0c, fffff88009b92660, 0}

*** WARNING: Unable to verify timestamp for nvlddmkm.sys
*** ERROR: Module load completed but symbols could not be loaded for nvlddmkm.sys
Probably caused by : nvlddmkm.sys ( nvlddmkm+32ad0c )

Followup: MachineOwner
---------

Code:

*******************************************************************************
*                                                                             *
*                        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: fffff800022f110c, Address of the instruction which caused the bugcheck
Arg3: fffff8800acb7cf0, 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: 
nt!ObReferenceObjectSafe+c
fffff800`022f110c 498b02          mov     rax,qword ptr [r10]

CONTEXT:  fffff8800acb7cf0 -- (.cxr 0xfffff8800acb7cf0)
rax=fffffa800a641370 rbx=b9fffa800a8f8060 rcx=b9fffa800a8f8060
rdx=fffff8000250c900 rsi=b9fffa800a8f8480 rdi=fffffa800ada4b60
rip=fffff800022f110c rsp=fffff8800acb86c0 rbp=fffff8800acb8ca0
 r8=0000000000000000  r9=fffffa800a627b60 r10=b9fffa800a8f8030
r11=0000000000000005 r12=0000000000000000 r13=fffffa800a627e38
r14=0000000000000011 r15=0000000000000000
iopl=0         nv up ei ng nz na po nc
cs=0010  ss=0018  ds=002b  es=002b  fs=0053  gs=002b             efl=00010286
nt!ObReferenceObjectSafe+0xc:
fffff800`022f110c 498b02          mov     rax,qword ptr [r10] ds:002b:b9fffa80`0a8f8030=????????????????
Resetting default scope

CUSTOMER_CRASH_COUNT:  1

DEFAULT_BUCKET_ID:  WIN7_DRIVER_FAULT

BUGCHECK_STR:  0x3B

PROCESS_NAME:  Steam.exe

CURRENT_IRQL:  0

LAST_CONTROL_TRANSFER:  from fffff80002567fa6 to fffff800022f110c

STACK_TEXT:  
fffff880`0acb86c0 fffff800`02567fa6 : 00000000`00000000 fffffa80`0a641370 fffffa80`0a641370 00000000`0039d498 : nt!ObReferenceObjectSafe+0xc
fffff880`0acb86f0 fffff800`025ce886 : 00000000`00393040 fffff800`00010400 fffff880`0acb8880 00000000`00000000 : nt!ExpGetProcessInformation+0x498
fffff880`0acb8840 fffff800`025cf955 : 00000000`00393040 00000000`00000000 00000000`00000005 00000000`000003b8 : nt!ExpQuerySystemInformation+0xf14
fffff880`0acb8be0 fffff800`022d4813 : 00000000`00000001 00000000`00390000 00000000`ffe8e001 fffffa80`00008000 : nt!NtQuerySystemInformation+0x4d
fffff880`0acb8c20 00000000`7784fa1a : 00000000`00000000 00000000`00000000 00000000`00000000 00000000`00000000 : nt!KiSystemServiceCopyEnd+0x13
00000000`178ee608 00000000`00000000 : 00000000`00000000 00000000`00000000 00000000`00000000 00000000`00000000 : 0x7784fa1a


FOLLOWUP_IP: 
nt!ObReferenceObjectSafe+c
fffff800`022f110c 498b02          mov     rax,qword ptr [r10]

SYMBOL_STACK_INDEX:  0

SYMBOL_NAME:  nt!ObReferenceObjectSafe+c

FOLLOWUP_NAME:  MachineOwner

MODULE_NAME: nt

IMAGE_NAME:  ntkrnlmp.exe

DEBUG_FLR_IMAGE_TIMESTAMP:  503f857d

STACK_COMMAND:  .cxr 0xfffff8800acb7cf0 ; kb

FAILURE_BUCKET_ID:  X64_0x3B_nt!ObReferenceObjectSafe+c

BUCKET_ID:  X64_0x3B_nt!ObReferenceObjectSafe+c

Followup: MachineOwner
---------

oke i did all this just now gonne see and test if he still freezes or gives BSOD's. ill post the result. thanks for the help

:)

Keep us updated.

If it BSOD`s upload the dumps

15 min ago i had a freez up again of my pc and after that when i want to log in i always get a BSOD. here are the dump files

uninstall/update Graphics Card Smart Tuner(GIGABYTE)

i deleted the GPU tool of gigabyte it worked for a while again but i got a crash again here's the dump file