windows has recovered from an unexpedted shutdown. How do i fix it.

Log Name: System
Source: Microsoft-Windows-Kernel-Power
Date: 11/15/2011 2:24:59 AM
Event ID: 41
Task Category: (63)
Level: Critical
Keywords: (2)
User: SYSTEM
Computer: Justin-Home-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="Error">
<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="2011-11-15T10:24:59.675630100Z" />
<EventRecordID>8626</EventRecordID>
<Correlation />
<Execution ProcessID="4" ThreadID="8" />
<Channel>System</Channel>
<Computer>Justin-Home-PC</Computer>
<Security UserID="S-1-5-18" />
</System>
<EventData>
<Data Name="BugcheckCode">26</Data>
<Data Name="BugcheckParameter1">0x41284</Data>
<Data Name="BugcheckParameter2">0x820a7001</Data>
<Data Name="BugcheckParameter3">0x63a91</Data>
<Data Name="BugcheckParameter4">0xfffff70001080000</Data>
<Data Name="SleepInProgress">false</Data>
<Data Name="PowerButtonTimestamp">0</Data>
</EventData>
</Event>

I seem to have a kernel power problem every now an then, but I don't worry about it. If it occurs on a constant basis, that is a different story.

Bug Check 26 seems to indicate:

This indicates that a problem occurred in the CD file system

Are you getting Blue screens?

It's happened 5 times in the last month. I come back to the computer and its at the login screen.

It only happens when you are not at the computer? Could it be a sleep caused problem?

If you could get a dump file it might help, if you are getting one. But the system will shutdown when it sees something that might be dangerous to the install. Could be a device, or some utility not playing nice with the kernel or some of its memory.

Can you think of any reason the CDFS might be involved. Are you running a virtual drive or any software that might be using something like that. I also notice CDfs could be related to a Linux situation.