Home built shutdowns

Hi guys,

You were very helpful to me in building my first rig ever. It worked great for well over a month but now randomly shuts down when playing SWTOR. I looked around at the error message and learned that heat can be a problem. I installed Speedfan and my CPU and GPU seem to be fine.

What else should I be doing for the error below...

A fatal hardware error has occurred.

Component: AMD Northbridge
Error Source: Machine Check Exception
Error Type: HyperTransport Watchdog Timeout Error
Processor ID: 0

The details view of this entry contains further information.

- <Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event">
- <System>
<Provider Name="Microsoft-Windows-WHEA-Logger" Guid="{C26C4F3C-3F66-4E99-8F8A-39405CFED220}" />
<EventID>20</EventID>
<Version>0</Version>
<Level>2</Level>
<Task>0</Task>
<Opcode>0</Opcode>
<Keywords>0x8000000000000000</Keywords>
<TimeCreated SystemTime="2013-10-12T16:19:29.700505000Z" />
<EventRecordID>9888</EventRecordID>
<Correlation ActivityID="{ECE2A7B2-4710-4500-85F1-DEF70FE72114}" />
<Execution ProcessID="1772" ThreadID="3448" />
<Channel>System</Channel>
<Computer>NewOffice-PC</Computer>
<Security UserID="S-1-5-19" />
</System>
- <EventData>
<Data Name="ErrorSource">3</Data>
<Data Name="ApicId">0</Data>
<Data Name="MCABank">4</Data>
<Data Name="MciStat">0xfe00000000070f0f</Data>
<Data Name="MciAddr">0xfeb86844</Data>
<Data Name="MciMisc">0xc00a0fff01000000</Data>
<Data Name="ErrorType">7</Data>
<Data Name="Length">928</Data>
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</EventData>
</Event>