Random reboot problem

9hello guys,
two weeks ago i bought myself some upgrade which are these:

Intel i7 920 cpu
gigabyte ga-ex58-ud3r rev 1.6 GA-EX58-UD3R (rev. 1.6) - GIGABYTE - Product - Motherboard - Specification

Corsair 6gig kit. ddr3 3x2g CMX6GX3M3A1600C9

And a Western digital 1TB 7200rmp 32mb cache hard disk

Other components:

MSI Nvidia 285 gtx video card
AXP 630 watts PSU
Dvd writer from HP

i also use a wireless internet connection with a usb wireless receiver stick. this is the TP-LINK321G

Now the problem:
I'm having spontaneous reboots. computer just falls out and restarts immediatly.
This happened once while downloading all the other times while gaming.
-Temperatures are fine,no overheating
-Memtest was fine
-Upgraded all drivers + upgraded bios
-inserted an older HD with windows xp on it,still the same problem.
-have run 2 sticks of my memory in dual channel(deleted one stick)

Here's some stuff from event viewer:

Log Name: System
Source: Microsoft-Windows-Kernel-Power
Date: 4/02/2010 23:17:15
Event ID: 41
Task Category: (63)
Level: Critical
Keywords: (2)
User: SYSTEM
Computer: shib-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="2010-02-04T22:17:15.395212100Z" />
<EventRecordID>3630</EventRecordID>
<Correlation />
<Execution ProcessID="4" ThreadID="8" />
<Channel>System</Channel>
<Computer>shib-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>

Log Name: Microsoft-Windows-Kernel-EventTracing/Admin
Source: Microsoft-Windows-Kernel-EventTracing
Date: 4/02/2010 23:17:18
Event ID: 3
Task Category: Session
Level: Error
Keywords: Session
User: SYSTEM
Computer: shib-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="2010-02-04T22:17:18.016016700Z" />
<EventRecordID>17</EventRecordID>
<Correlation />
<Execution ProcessID="4" ThreadID="196" />
<Channel>Microsoft-Windows-Kernel-EventTracing/Admin</Channel>
<Computer>shib-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>

I also get some other warnings or errors which are these(not sure if they're usefull but i'll post em anyways):

Log Name: Microsoft-Windows-Dhcp-Client/Admin
Source: Microsoft-Windows-Dhcp-Client
Date: 5/02/2010 0:06:43
Event ID: 1003
Task Category: Address Configuration State Event
Level: Warning
Keywords:
User: LOCAL SERVICE
Computer: shib-PC
Description:
Your computer was not able to renew its address from the network (from the DHCP Server) for the Network Card with network address 0x0019E067D016. The following error occurred: 0x79. Your computer will continue to try and obtain an address on its own from the network address (DHCP) server.
Event Xml:
<Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event">
<System>
<Provider Name="Microsoft-Windows-Dhcp-Client" Guid="{15A7A4F8-0072-4EAB-ABAD-F98A4D666AED}" />
<EventID>1003</EventID>
<Version>0</Version>
<Level>3</Level>
<Task>3</Task>
<Opcode>77</Opcode>
<Keywords>0x4000000000000000</Keywords>
<TimeCreated SystemTime="2010-02-04T23:06:43.840263800Z" />
<EventRecordID>20</EventRecordID>
<Correlation />
<Execution ProcessID="916" ThreadID="1812" />
<Channel>Microsoft-Windows-Dhcp-Client/Admin</Channel>
<Computer>shib-PC</Computer>
<Security UserID="S-1-5-19" />
</System>
<EventData>
<Data Name="HWLength">6</Data>
<Data Name="HWAddress">0019E067D016</Data>
<Data Name="StatusCode">121</Data>
</EventData>
</Event>

Log Name: System
Source: Microsoft-Windows-DNS-Client
Date: 5/02/2010 0:07:00
Event ID: 1014
Task Category: None
Level: Warning
Keywords:
User: NETWORK SERVICE
Computer: shib-PC
Description:
Name resolution for the name dns.msftncsi.com timed out after none of the configured DNS servers responded.
Event Xml:
<Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event">
<System>
<Provider Name="Microsoft-Windows-DNS-Client" Guid="{1C95126E-7EEA-49A9-A3FE-A378B03DDB4D}" />
<EventID>1014</EventID>
<Version>0</Version>
<Level>3</Level>
<Task>0</Task>
<Opcode>0</Opcode>
<Keywords>0x4000000000000000</Keywords>
<TimeCreated SystemTime="2010-02-04T23:07:00.563220300Z" />
<EventRecordID>3747</EventRecordID>
<Correlation />
<Execution ProcessID="1056" ThreadID="3660" />
<Channel>System</Channel>
<Computer>shib-PC</Computer>
<Security UserID="S-1-5-20" />
</System>
<EventData>
<Data Name="QueryName">dns.msftncsi.com</Data>
<Data Name="AddressLength">28</Data>
<Data Name="Address">1700003500000000FEC000000000FFFF000000000000000301000000</Data>
</EventData>
</Event>

Log Name: Application
Source: Microsoft-Windows-CAPI2
Date: 5/02/2010 0:26:50
Event ID: 4107
Task Category: None
Level: Error
Keywords: Classic
User: N/A
Computer: shib-PC
Description:
Failed extract of third-party root list from auto update cab at: <http://www.download.windowsupdate.co...uthrootstl.cab> with error: A certificate chain could not be built to a trusted root authority.
.
Event Xml:
<Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event">
<System>
<Provider Name="Microsoft-Windows-CAPI2" Guid="{5bbca4a8-b209-48dc-a8c7-b23d3e5216fb}" EventSourceName="Microsoft-Windows-CAPI2" />
<EventID Qualifiers="0">4107</EventID>
<Version>0</Version>
<Level>2</Level>
<Task>0</Task>
<Opcode>0</Opcode>
<Keywords>0x8080000000000000</Keywords>
<TimeCreated SystemTime="2010-02-04T23:26:50.478279500Z" />
<EventRecordID>831</EventRecordID>
<Correlation />
<Execution ProcessID="1056" ThreadID="2524" />
<Channel>Application</Channel>
<Computer>shib-PC</Computer>
<Security />
</System>
<EventData>
<Data>http://www.download.windowsupdate.com/msdownload/update/v3/static/trustedr/en/authrootstl.cab</Data>
<Data>A certificate chain could not be built to a trusted root authority.
</Data>
</EventData>
</Event>

Some pics from CPU-Z:

CPU-Z Validator 3.1

Have even been to pc store with pc and they've checked my pc + did stresstests with 3rdmark to check if he'd reboot. everything was fine.
have no idea what to do now. all help is welcome

Thx in advance,
Shibby

doing an everst stability test atm.

no throttling happened
none of the cores went above 74degrees after 10 minutes testing

also noticed my system information says i have a x64 based system :s

Some conflicts,graphic card problem?

http://img692.imageshack.us/img692/9489/hmz.png


so strange he only crashes while im gaming.

have done 3d mark tests -> no crashes

everest stability test -> no crashes

i start gaming -> crashed after abt 10 minutes