BSOD's Vista 64

Hi my computer broke and I sent it away for repair and upgrades, It took them 6 weeks to do, after receiveing it back I had a BSOD within a few mins of turning it on, since then over a 2 week period I've had :

24 BSOD's
Internet explorer has stoped working 16 times
Superfetch has stoped working 26 times

My Specs are

Q6600
8GB of Ram
9800GTX
Windows Vista 64

I've run memtest for 5 hours with no errors and double checked it by using the Microsoft memory checker.

I'm aware of course that this could easily be a hardware issue but I'm in a wheelchair and unable to work and my PC is my main entertainment during the day so losing it for another 6 weeks is something I'd really love to avoid if possible.

The BSOD's seem very random and seem to happen with similar frequency if I'm doing very little or playing a high end game. I've even had more than one BSOD while I was out of the room with my computer sitting idle. My Computer is water cooled and none of my temps are over 50 degrees.

The BSOD's seem to have multiple reasons with the most common being "probably caused by ntkrnlmp.exe "

Here is an example of a crash dump with analyse v

Executable search path is:
Windows Server 2008 Kernel Version 6001 (Service Pack 1) MP (4 procs) Free x64
Product: WinNt, suite: TerminalServer SingleUserTS Personal
Built by: 6001.18000.amd64fre.longhorn_rtm.080118-1840
Kernel base = 0xfffff800`01e12000 PsLoadedModuleList = 0xfffff800`01fd7db0
Debug session time: Fri May 23 09:22:22.164 2008 (GMT+1)
System Uptime: 0 days 1:13:01.128
Loading Kernel Symbols
..............................................................................................................................................................
Loading User Symbols
Loading unloaded module list
......
*******************************************************************************
*                                                                             *
*                        Bugcheck Analysis                                    *
*                                                                             *
*******************************************************************************

Use !analyze -v to get detailed debugging information.

BugCheck 1A, {403, fffff680001e9740, 52f00000c2494847, fffff680001ac701}

Probably caused by : ntkrnlmp.exe ( nt! ?? ::FNODOBFM::`string'+c306 )

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

2: kd> !analyze -v
*******************************************************************************
*                                                                             *
*                        Bugcheck Analysis                                    *
*                                                                             *
*******************************************************************************

MEMORY_MANAGEMENT (1a)
    # Any other values for parameter 1 must be individually examined.
Arguments:
Arg1: 0000000000000403, The subtype of the bugcheck.
Arg2: fffff680001e9740
Arg3: 52f00000c2494847
Arg4: fffff680001ac701

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


BUGCHECK_STR:  0x1a_403

CUSTOMER_CRASH_COUNT:  1

DEFAULT_BUCKET_ID:  VISTA_DRIVER_FAULT

PROCESS_NAME:  AgeOfConan.exe

CURRENT_IRQL:  2

LAST_CONTROL_TRANSFER:  from fffff80001ebcd46 to fffff80001e67390

STACK_TEXT:  
fffffa60`0d8d6918 fffff800`01ebcd46 : 00000000`0000001a 00000000`00000403 fffff680`001e9740 52f00000`c2494847 : nt!KeBugCheckEx
fffffa60`0d8d6920 fffff800`01e9b65a : 00000000`3d3e2601 00000000`3d400000 00000000`00000200 00000000`000000c0 : nt! ?? ::FNODOBFM::`string'+0xc306
fffffa60`0d8d6980 fffff800`01ea632e : 00000000`00000011 00000000`3dabffff fffffa80`00000000 fffff800`00000000 : nt!MiDeleteVirtualAddresses+0x32a
fffffa60`0d8d6b10 fffff800`01e66e33 : ffffffff`ffffffff fffffa80`0843ebb0 00000000`0007e560 fffffa80`00008000 : nt!NtFreeVirtualMemory+0xa1e
fffffa60`0d8d6c20 00000000`771f5c5a : 00000000`00000000 00000000`00000000 00000000`00000000 00000000`00000000 : nt!KiSystemServiceCopyEnd+0x13
00000000`0007e538 00000000`00000000 : 00000000`00000000 00000000`00000000 00000000`00000000 00000000`00000000 : 0x771f5c5a


STACK_COMMAND:  kb

FOLLOWUP_IP:
nt! ?? ::FNODOBFM::`string'+c306
fffff800`01ebcd46 cc              int     3

SYMBOL_STACK_INDEX:  1

SYMBOL_NAME:  nt! ?? ::FNODOBFM::`string'+c306

FOLLOWUP_NAME:  MachineOwner

MODULE_NAME: nt

IMAGE_NAME:  ntkrnlmp.exe

DEBUG_FLR_IMAGE_TIMESTAMP:  479192b7

FAILURE_BUCKET_ID:  X64_0x1a_403_nt!_??_::FNODOBFM::_string_+c306

BUCKET_ID:  X64_0x1a_403_nt!_??_::FNODOBFM::_string_+c306

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

There are many errors in the event log with the most common ones over the past few days being

event id 10 WMI - 25 times
event id 1000 Application Error 48 times
event id 6008 EventLog 8 times (these are the BSOD's)
event id 7031 Service control manager 156 times
event id 7034 Service control manager 28 times
event id 15016 HttpEvent 25 times
event id 15021 HttpEvent 51 times

I can of course post more crash dumps if needed

Any help that could prevent me watching day time TV for the next month would be greatly appricated, Thank you for your time.
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