you haven't given us too much to go on regarding your crashing, the dump file mentions reliccoh.exe, does the freezing/crashing/rebooting(?) happen mid-game?
dump file:
Microsoft (R) Windows Debugger Version 6.11.0001.404 AMD64
Copyright (c) Microsoft Corporation. All rights reserved.
Loading Dump File [E:\Windows 7 downloads\012410-26598-01.dmp]
Mini Kernel Dump File: Only registers and stack trace are available
WARNING: Whitespace at end of path element
Symbol search path is: SRV*c:\symbols*
http://msdl.microsoft.com/download/symbols
Executable search path is:
Windows 7 Kernel Version 7600 MP (4 procs) Free x64
Product: WinNt, suite: TerminalServer SingleUserTS
Built by: 7600.16385.amd64fre.win7_rtm.090713-1255
Machine Name:
Kernel base = 0xfffff800`02e54000 PsLoadedModuleList = 0xfffff800`03091e50
Debug session time: Sun Jan 24 20:25:38.432 2010 (GMT+0)
System Uptime: 0 days 2:04:16.336
Loading Kernel Symbols
...............................................................
................................................................
....................................
Loading User Symbols
Loading unloaded module list
...........
*******************************************************************************
* *
* Bugcheck Analysis *
* *
*******************************************************************************
Use !analyze -v to get detailed debugging information.
BugCheck 124, {0, fffffa80058a8028, b6602000, 2b000135}
Probably caused by : hardware
Followup: MachineOwner
---------
2: kd> !analyze -v
*******************************************************************************
* *
* Bugcheck Analysis *
* *
*******************************************************************************
WHEA_UNCORRECTABLE_ERROR (124)
A fatal hardware error has occurred. Parameter 1 identifies the type of error
source that reported the error. Parameter 2 holds the address of the
WHEA_ERROR_RECORD structure that describes the error conditon.
Arguments:
Arg1: 0000000000000000, Machine Check Exception
Arg2: fffffa80058a8028, Address of the WHEA_ERROR_RECORD structure.
Arg3: 00000000b6602000, High order 32-bits of the MCi_STATUS value.
Arg4: 000000002b000135, Low order 32-bits of the MCi_STATUS value.
Debugging Details:
------------------
BUGCHECK_STR: 0x124_AuthenticAMD
CUSTOMER_CRASH_COUNT: 1
DEFAULT_BUCKET_ID: VISTA_DRIVER_FAULT
PROCESS_NAME: RelicCOH.exe
CURRENT_IRQL: f
STACK_TEXT:
fffff880`02f78a88 fffff800`02e1d903 : 00000000`00000124 00000000`00000000 fffffa80`058a8028 00000000`b6602000 : nt!KeBugCheckEx
fffff880`02f78a90 fffff800`02fda513 : 00000000`00000001 fffffa80`058cfea0 00000000`00000000 fffffa80`058cfef0 : hal!HalBugCheckSystem+0x1e3
fffff880`02f78ad0 fffff800`02e1d5c8 : 00000000`00000728 fffffa80`058cfea0 fffff880`02f78e30 00000000`00000100 : nt!WheaReportHwError+0x263
fffff880`02f78b30 fffff800`02e1cf1a : fffffa80`058cfea0 fffff880`02f78e30 fffffa80`058cfea0 00000000`00000000 : hal!HalpMcaReportError+0x4c
fffff880`02f78c80 fffff800`02e10e8f : 00000000`1c4cce00 00000000`00000001 fffff880`02f78eb0 00000000`00000000 : hal!HalpMceHandler+0x9e
fffff880`02f78cc0 fffff800`02ec47ac : 00000000`00000000 00000000`00000000 00000000`00000000 00000000`00000000 : hal!HalHandleMcheck+0x47
fffff880`02f78cf0 fffff800`02ec4613 : 00000000`00000000 00000000`00000000 00000000`00000000 00000000`00000000 : nt!KxMcheckAbort+0x6c
fffff880`02f78e30 00000000`24108df9 : 00000000`00000000 00000000`00000000 00000000`00000000 00000000`00000000 : nt!KiMcheckAbort+0x153
00000000`226feef8 00000000`00000000 : 00000000`00000000 00000000`00000000 00000000`00000000 00000000`00000000 : 0x24108df9
STACK_COMMAND: kb
FOLLOWUP_NAME: MachineOwner
MODULE_NAME: hardware
IMAGE_NAME: hardware
DEBUG_FLR_IMAGE_TIMESTAMP: 0
FAILURE_BUCKET_ID: X64_0x124_AuthenticAMD_PROCESSOR_CACHE
BUCKET_ID: X64_0x124_AuthenticAMD_PROCESSOR_CACHE
Followup: MachineOwner
---------