Windows 7 black screen crash.

Hey there guys, I seem to have a serious problem which I can't exactly wrap my brain around.

My specs are,

Windows 7 Ultimate 64bit
AMD Phenom II x4 965 BE
Asus M4A77D AMD 770 (Socket AM3) PCI-Express DDR2 Motherboard
ATI Radeon 4850
OCZ DDR2 800mhz 4GB(2x2GB)
450w Thermaltake Modular power supply

Errors:

Log Name: System
Source: Microsoft-Windows-WHEA-Logger
Date: 14/05/2010 08:35:17
Event ID: 20
Task Category: None
Level: Error
Keywords:
User: LOCAL SERVICE
Computer: Jay-PC
Description:
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 Xml:
<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="2010-05-14T07:35:17.683238700Z" />
<EventRecordID>3556</EventRecordID>
<Correlation ActivityID="{2973833C-16D3-46ED-8F27-2FC90B1159FB}" />
<Execution ProcessID="1260" ThreadID="1740" />
<Channel>System</Channel>
<Computer>Jay-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">0xfa00000000070f0f</Data>
<Data Name="MciAddr">0x0</Data>
<Data Name="MciMisc">0xc00a0fff01000000</Data>
<Data Name="ErrorType">7</Data>
<Data Name="Length">928</Data>
<Data Name="RawData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ata>
</EventData>
</Event>

Log Name: System
Source: Microsoft-Windows-WER-SystemErrorReporting
Date: 14/05/2010 08:35:15
Event ID: 1001
Task Category: None
Level: Error
Keywords: Classic
User: N/A
Computer: Jay-PC
Description:
The computer has rebooted from a bugcheck. The bugcheck was: 0x00000124 (0x0000000000000000, 0xfffffa8004d9e8f8, 0x0000000000000000, 0x0000000000000000). A dump was saved in: C:\Windows\Minidump\051410-20576-01.dmp. Report Id: 051410-20576-01.
Event Xml:
<Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event">
<System>
<Provider Name="Microsoft-Windows-WER-SystemErrorReporting" Guid="{ABCE23E7-DE45-4366-8631-84FA6C525952}" EventSourceName="BugCheck" />
<EventID Qualifiers="16384">1001</EventID>
<Version>0</Version>
<Level>2</Level>
<Task>0</Task>
<Opcode>0</Opcode>
<Keywords>0x80000000000000</Keywords>
<TimeCreated SystemTime="2010-05-14T07:35:15.000000000Z" />
<EventRecordID>3501</EventRecordID>
<Correlation />
<Execution ProcessID="0" ThreadID="0" />
<Channel>System</Channel>
<Computer>Jay-PC</Computer>
<Security />
</System>
<EventData>
<Data Name="param1">0x00000124 (0x0000000000000000, 0xfffffa8004d9e8f8, 0x0000000000000000, 0x0000000000000000)</Data>
<Data Name="param2">C:\Windows\Minidump\051410-20576-01.dmp</Data>
<Data Name="param3">051410-20576-01</Data>
</EventData>
</Event>

Log Name: Microsoft-Windows-Kernel-EventTracing/Admin
Source: Microsoft-Windows-Kernel-EventTracing
Date: 14/05/2010 08:35:05
Event ID: 3
Task Category: Session
Level: Error
Keywords: Session
User: SYSTEM
Computer: Jay-PC
Description:
Session "Microsoft-Windows-Setup" stopped due to the following error: 0xC000000D
Event Xml:
<Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event">
<System>
<Provider Name="Microsoft-Windows-Kernel-EventTracing" Guid="{B675EC37-BDB6-4648-BC92-F3FDC74D3CA2}" />
<EventID>3</EventID>
<Version>0</Version>
<Level>2</Level>
<Task>2</Task>
<Opcode>14</Opcode>
<Keywords>0x8000000000000010</Keywords>
<TimeCreated SystemTime="2010-05-14T07:35:05.608817600Z" />
<EventRecordID>1</EventRecordID>
<Correlation />
<Execution ProcessID="4" ThreadID="164" />
<Channel>Microsoft-Windows-Kernel-EventTracing/Admin</Channel>
<Computer>Jay-PC</Computer>
<Security UserID="S-1-5-18" />
</System>
<EventData>
<Data Name="SessionName">Microsoft-Windows-Setup</Data>
<Data Name="FileName">C:\Windows\Panther\setup.etl</Data>
<Data Name="ErrorCode">3221225485</Data>
<Data Name="LoggingMode">5</Data>
</EventData>
</Event>

Log Name: System
Source: Microsoft-Windows-Kernel-Power
Date: 14/05/2010 08:35:03
Event ID: 41
Task Category: (63)
Level: Critical
Keywords: (2)
User: SYSTEM
Computer: Jay-PC
Description:
The system has rebooted without cleanly shutting down first. This error could be caused if the system stopped responding, crashed, or lost power unexpectedly.
Event Xml:
<Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event">
<System>
<Provider Name="Microsoft-Windows-Kernel-Power" Guid="{331C3B3A-2005-44C2-AC5E-77220C37D6B4}" />
<EventID>41</EventID>
<Version>2</Version>
<Level>1</Level>
<Task>63</Task>
<Opcode>0</Opcode>
<Keywords>0x8000000000000002</Keywords>
<TimeCreated SystemTime="2010-05-14T07:35:03.565214000Z" />
<EventRecordID>3500</EventRecordID>
<Correlation />
<Execution ProcessID="4" ThreadID="8" />
<Channel>System</Channel>
<Computer>Jay-PC</Computer>
<Security UserID="S-1-5-18" />
</System>
<EventData>
<Data Name="BugcheckCode">0</Data>
<Data Name="BugcheckParameter1">0x0</Data>
<Data Name="BugcheckParameter2">0x0</Data>
<Data Name="BugcheckParameter3">0x0</Data>
<Data Name="BugcheckParameter4">0x0</Data>
<Data Name="SleepInProgress">false</Data>
<Data Name="PowerButtonTimestamp">0</Data>
</EventData>
</Event>

These are the lesser informations:

A fatal hardware error has occurred.

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

The computer has rebooted from a bugcheck. The bugcheck was: 0x00000124 (0x0000000000000000, 0xfffffa8004d9e8f8, 0x0000000000000000, 0x0000000000000000). A dump was saved in: C:\Windows\Minidump\051410-20576-01.dmp. Report Id: 051410-20576-01.

Session "Microsoft-Windows-Setup" stopped due to the following error: 0xC000000D

The system has rebooted without cleanly shutting down first. This error could be caused if the system stopped responding, crashed, or lost power unexpectedly.

The previous system shutdown at 08:33:27 on ‎14/‎05/‎2010 was unexpected.

-----------------------------------------------------------------------

My motherboard and processor are literally brand new, I got them both two days ago because I thought by replacing the motherboard and CPU that it would fix my problem because I had similiar problems on my intel dual core before it was replaced.

These crashes only seem to happen during gaming, in this case I was playing Crysis Warhead (I should point out, it only seems to be games like crysis and borderlands and once it happened on mass effect 2 but I play HL2 mods like garry's mod and counterstrike and I don't have this crashing issue). On my dual core, I would get lines down the screen and my system would reboot itself, this time it seems to be just a black screen then the system resets itself. I've ran memtest86 with 5 passes and no errors what-so-ever, I've done harddrive tests and had an all clear and my ATI radeon 4850 is practically new also, by about a month so I don't see how that would be the problem either.

I could really use some advice as this is really driving me nuts. Also, my temps are fine. Idle my CPU cores at 30c each and my graphics card is anywhere between 40-50c idle.