Windows 7 The Blue screen ??!!

Log Name:      System
Source:        Microsoft-Windows-Kernel-Power
Date:          5/6/2010 5:46:03 AM
Event ID:      41
Task Category: (63)
Level:         Critical
Keywords:      (2)
User:          SYSTEM
Computer:      -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="[B]Link Removed due to 404 Error[/B]">
  <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="2010-05-06T02:46:03.332812000Z" />
    <EventRecordID>15375</EventRecordID>
    <Correlation />
    <Execution ProcessID="4" ThreadID="8" />
    <Channel>System</Channel>
    <Computer>Sultan-PC</Computer>
    <Security UserID="S-1-5-18" />
  </System>
  <EventData>
    <Data Name="BugcheckCode">222</Data>
    <Data Name="BugcheckParameter1">0x2</Data>
    <Data Name="BugcheckParameter2">0xfffff8a0085601c0</Data>
    <Data Name="BugcheckParameter3">0xffbff8a0085601c1</Data>
    <Data Name="BugcheckParameter4">0x621328c0</Data>
    <Data Name="SleepInProgress">false</Data>
    <Data Name="PowerButtonTimestamp">0</Data>
  </EventData>
</Event>