My computer restarts and occasionally freezes when I play Bioshock and CoD 5. All my temps are fine. All my drivers are up to date. I have the latest version of directx. Stress tested CPU, no problems. Stress tested video card, no problems. Tested RAM, no problems. Run on Windows XP previously, same problem. Put in 700W power supply, same problem. Reinstalled the games, same problem. Swapped out the RAM, same problem. Swapped out the video card, same problem. Ran hard drive diagnostics. Reformatted hard drive, same problem. Disconnected all non-essential devices. Unchecked "restart on error". Same problem. Checked event viewer. No application errors. One system error saying: Log Name: System Source: Microsoft-Windows-Kernel-Power Date: 6/4/2009 2:07:42 PM Event ID: 41 Task Category: (63) Level: Critical Keywords: (2) User: SYSTEM Computer: Owen-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="2009-06-04T20:07:42.031250000Z" /> <EventRecordID>16828</EventRecordID> <Correlation /> <Execution ProcessID="4" ThreadID="8" /> <Channel>System</Channel> <Computer>Owen-PC</Computer> <Security UserID="S-1-5-18" /> </System> <EventData> <Data Name="BugcheckCode">0</Data> <Data Name="BugcheckParameter">0x0</Data> <Data Name="BugcheckParameter">0x0</Data> <Data Name="BugcheckParameter">0x0</Data> <Data Name="BugcheckParameter">0x0</Data> <Data Name="SleepInProgress">false</Data> <Data Name="PowerButtonTimestamp">0</Data> </EventData> </Event> ANY THOUGHTS???

See how to setup and vew dump logs maybe. From what I gather the system is so damaged that it can't provide a good shutdown. Might simply start at bios,. Set to default or failsafe settings. ESD damage to parts and various part differences can cause system to crash without being able to ever tell. One a test line you might have to swap parts until you get the the faulty part. ESD can show up like this at any time. "Best Practices", Event viewer, host file, perfmon, antivirus, anti-spyware, Live CD's, backups, are in my top 10