Event 41 Kernel-Power, What could be causing this?

Hey guys, So I Logged into Bad Company 2 and loaded a level with lots of graphics and things goin on, and about 10 minutes into it, my Pc Locks up, its like your watching a movie and u click the pause button, thats what it looked like on my screen, it showed me paused, and I had to press the power button on the pc to reset it, well when I came back on I read event viewer and researched a little online, My question is Could using a High End Graphics card on a 550 watt Psu Cause these Lockup's? From what I've Read, they said it could be my power supply but I wanna get a few Opinions,
also Specs are intel core i5 750 2.6ghz stock, gskill 1600mhz 1.5v, 4 fans, 3 hdd's, 1 evga 465 gtx and a 550 watt $40 psu, I know I need a Better Psu, I just got done replacing my old ocz ram cause of errors on memtest so Im kinda broke until christmas :(, I just wanna know if my video card is tryin to pull too much juice than the psu can handle, check down below for the event viewer log. Thanks - Jim

Log Name: System
Source: Microsoft-Windows-Kernel-Power
Date: 11/13/2010 10:38:56 PM
Event ID: 41
Task Category: (63)
Level: Critical
Keywords: (2)
Computer: Jim-PC
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">
<Provider Name="Microsoft-Windows-Kernel-Power" Guid="{331C3B3A-2005-44C2-AC5E-77220C37D6B4}" />
<TimeCreated SystemTime="2010-11-14T06:38:56.932006000Z" />
<Correlation />
<Execution ProcessID="4" ThreadID="8" />
<Security UserID="S-1-5-18" />
<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>
3 answers Last reply
More about event kernel power causing this
  1. I don't think you GPU or your PSU is locking you up. Are you overclocked, or overvolted anywhere. Please post your BIOS config, please.
  2. i was having the same problem for about 4 months, couldnt go more than 10 days without the bsod, same problem with 2 different graphics cards, 2 different PSUs and umpteen different drivers.Last thing i checked was the RAM, i had 4gb of DDR3 (2 X 2 GB) but i noticed they were slightly different. Swapped both sticks for 2x2 gb identical RAM and 5 weeks later ive not had a single crash (touch wood)
  3. do you overclock at all? if so put everything back to default.
    also, whats the exact model of the psu?
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