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Please help me diagnose why my laptop keeps powering off

This is a discussion on Please help me diagnose why my laptop keeps powering off within the Laptop Support forums, part of the Tech Support Forum category. Hi all! First post here! For a few months now my laptop (Dell Inspiron 6400) keeps doing this on occasion:


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Old 07-06-2012, 01:26 PM   #1
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Mistake

Hi all! First post here!

For a few months now my laptop (Dell Inspiron 6400) keeps doing this on occasion:
Screen goes black,
Sound goes off,
Hard drive light goes off,
CD drive light goes ON(?)
....I guess power to the CD drive means the computer isn't fully off, just severely disabled?

I initially thought it was overheating so I took it apart and removed the dust from around the CPU/GPU thermocouples/heat sinks.
This seems to improve things for a while (that might have just been my hopeful thinking though) but now it is getting much worse again, only this time there is no dust around the heat sinks...?

What is also peculiar is that it NEVER happens whilst watching movies.
It usually happens whilst I'm browsing/gaming/the laptop is left idle. Sometimes it won't happen for 5 hours, other times it happens every 5 minutes (Rendering my laptop unusable)

I was told previously that this looks like it may be a problem with my power supply. Since then I have tried using my friends power supply (same 65W output) with no luck. I have also been monitoring my core temps, which remain between 40 and 50 degrees (which I assume is fine?)

I have completely formatted my hardrive and performed a fresh install of Windows 7 Ultimate since this problem has been going on. That made no difference what-so-ever.

I have also run a Pre-boot system assessment (Not sure if this is Dell specific but it tests your HDD/CPU/Memory in various ways) and everything came back as fine!

System and Application Event Logs show nothing but an 'unexpected shutdown'.

Is there any way I can diagnose just what the hell is going on?

Kind regards
Sam
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Old 07-07-2012, 08:28 AM   #2
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Hi and welcome to TSF please see the info in this sticky https://www.techsupportforum.com/foru...ng-498132.html
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Old 07-10-2012, 03:32 AM   #3
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After trying the things out on your help page this is what I have found out:

The laptop is stable whilst the battery is taken out and the power plan is on "power saver". However: It becomes unstable when my mic is plugged in (for teamspeak).

Any ideas?
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Old 07-10-2012, 07:12 AM   #4
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Hi how old is the laptop and battery,have you updated teamspeak do you use steam also
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Old 07-10-2012, 07:30 AM   #5
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The laptop battery is ~5 years old, but it seems it has started happening when my battery is out too.
Upon further investigation it seems it crashes when my headset is plugged in (not mic) instead of an aux. cable to my amp. Regardless of whether TS is on or off. Is it the case that powering the drivers in my head-set uses more power?
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Old 07-10-2012, 07:40 AM   #6
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I would imagine the power is minimal did you try reinstalling the sound drivers you might also look in event viewer for anything around the time of the crash in the logs
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Old 07-11-2012, 12:38 PM   #7
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I have studied event viewer and these seems to be nothing abnormal at the times of the crashes.

Update: Today I've had more crashes (whilst battery & CDR drive and out), only mouse and in-ear headphones in. Decided to the the 'hard-reset' think and also reset the BIOS using CMOS battery pull. Both with no success :(

Will try sound drivers now! TY
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Old 07-12-2012, 06:33 AM   #8
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Sound drivers reinstalled and crashing with no audio peripherals plugged in (only ext. mouse).

Strange thing is that today it has ONLY crashed when I have died on a MOBA game I play (4 times can't be a coincidence can it?). Is this suggestive of a GPU or CPU usage spike causing issues? I assume spikes occur then because of death animations and what have you.

TY
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Old 07-12-2012, 06:58 AM   #9
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did you do it this way What information appears in event logs (Event Viewer)?
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Old 07-12-2012, 09:23 AM   #10
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Quote:
Originally Posted by joeten View Post
Yes, and I'm afraid it come up with nothing.
I just looked at the time the system log said "recovered from unexpected shutdown" and looked for strange looking events in the system and applications logs in the minutes before-hand. I couldn't see anything abnormal, but in fairness, I wasn't really sure what to look for!

There was this error in the application logs but it was more than two minutes before "unexpected shutdown":

Event filter with query "SELECT * FROM __InstanceModificationEvent WITHIN 60 WHERE TargetInstance ISA "Win32_Processor" AND TargetInstance.LoadPercentage > 99" could not be reactivated in namespace "//./root/CIMV2" because of error 0x80041003. Events cannot be delivered through this filter until the problem is corrected.

Thank you
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Old 07-12-2012, 09:45 AM   #11
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hi ok you might try the info here there is a fix it for this error Event ID 10 is logged in the Application log after you install Service Pack 1 for Windows 7 or Windows Server 2008 R2
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Old 07-12-2012, 09:48 AM   #12
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Ahhh, thank you! I was googling the error and came across several pages about "Event ID 10" (None of which I properly understood :( ), but I didn't come across a fix-it!

I hope this works!
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Old 07-12-2012, 09:49 AM   #13
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So do I goodluck
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Old 07-12-2012, 11:36 AM   #14
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Fix worked but didn't resolve crashes. Nothing abnormal in the event viewer at all this time, even a long time before the crashes occurred. Back to square one :(
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Old 07-12-2012, 11:41 AM   #15
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OK lets see if we can gather any info using the instructions here https://www.techsupportforum.com/foru...ta-452654.html
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Old 07-12-2012, 11:58 AM   #16
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Here are the BSOD JCGriff2 and Perfmon reports!
I can't make any sense of them myself :/
Attached Files
File Type: zip BSOD & Perfmon reports.zip (1.69 MB, 50 views)
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Old 07-12-2012, 12:01 PM   #17
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Ok give me a little time and I will ask a analyst to debug the files and see what they can find
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Old 07-12-2012, 12:02 PM   #18
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Quote:
Originally Posted by joeten View Post
Ok give me a little time and I will ask a analyst to debug the files and see what they can find
Thank you very much
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Old 07-12-2012, 12:03 PM   #19
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No problem please be patient they are always busy and will get to you as soon as they can
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Old 07-12-2012, 12:38 PM   #20
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D/L and run Hardware Monitor lets get a look at the temps.

There really isn't much in the WER reports that are recent.
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