Windows 7: Kernel-power

Hi all
yesterday I had to go out, to od a few things and left my computer on. Firefox was running and java clinet for IRC on one of the web sites.
When I came back I foudn out that my computer has shut restarted itself adnin the event viewer there was following message...
"The system has rebooted without cleanly shutting down first. This error could be caused if the system stopped responding, crashed, or lost power unexpectedly."

Can anyone shed some light on what coudl have caused it. I have checked everything and could not find any visible errors in hard drive operations or video card or power supply.

thanks

Possible there was a lost of power or there was an critical error, like BSOD. hard to say.

1) Can you post a screenshot of the event viewer screen that shows the event id and the event source? That'll help debug.

2) Your computer is set to automatically restart after a crash. This prevents the user from seeing the error codes present in the blue screen. You can disable this in system settings. See this to learn how.

3) If a dump file is created by windows for the crash, it can be analyzed and helps debug. In the same window as in 2) above, in the Write debugging information list, click Small memory dump (64k) (if not already done). If you had already done this, then locate the folder called Minidump in C:\windows, zip it and upload it.

Please read this: What is Kernel Power Error ID 41

Here are the details

- System

- Provider


[ Name] Microsoft-Windows-DNS-Client


[ Guid] {1C95126E-7EEA-49A9-A3FE-A378B03DDB4D}



EventID 1014


Version 0


Level 3


Task 0


Opcode 0


Keywords 0x4000000000000000

- TimeCreated


[ SystemTime] 2010-04-18T07:57:48.036132800Z



EventRecordID 26194


Correlation

- Execution


[ ProcessID] 1156


[ ThreadID] 3380



Channel System


Computer xxxxxx-PC

- Security


[ UserID] S-1-5-20

- EventData

QueryName inferno.demonoid.com

AddressLength 16

Address 02000035C0A801010000000000000000


No blue screen....(at least I don't' think so, no dump file created) first thing I checked, I know how to analyze them.

Thanks

here is another kernel-power log
- System

- Provider


[ Name] Microsoft-Windows-Kernel-Power


[ Guid] {331C3B3A-2005-44C2-AC5E-77220C37D6B4}



EventID 41


Version 2


Level 1


Task 63


Opcode 0


Keywords 0x8000000000000002

- TimeCreated


[ SystemTime] 2010-04-18T09:56:58.140625000Z



EventRecordID 26199


Correlation

- Execution


[ ProcessID] 4


[ ThreadID] 8



Channel System


Computer xxxxxxx-PC

- Security


[ UserID] S-1-5-18

- EventData

BugcheckCode 0

BugcheckParameter1 0x0

BugcheckParameter2 0x0

BugcheckParameter3 0x0

BugcheckParameter4 0x0

SleepInProgress false

PowerButtonTimestamp 0

acdc,

Your eventlog shows event id 1014 and event source DNS client. Its probably arisen from pages viewed in your web browser that have ads linking to unresponsive servers, or a bad return from the DNS server. Also, the log names inferno.demonoid.com which is presumably linked to the demonoid website.

Normally, one would have expected a temporary loss of connectivity or IE not responding. But your computer actually restarted. My guess is the bad response from the servers/ DNS servers , perhaps coupled with the browser not responding caused a cpu usage spike and your computer restarted to protect the cpu from damage.

What can you do? Maybe avoid demonoid for a couple of days, try a different web browser.

Thank you...
I can understand what you're saying, but I am using FF... My ADSL modem started locking up recently requiring power off/on to get it going.
I will skip demon web site. Was looking for audio book of Orvel's "1984".

But what about second one?

The second log is not really useful for debugging your shutdown. If you read the post, Kari linked, you'll know that kernel error 41 is simply a statement that the computer crashed, it is not the cause of the crash. It is the event just before 41 that is relevant.