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Windows 7: Removing the power cord makes Windows 7 crahes hard at the reboot.

07 Feb 2012   #11

Windows 7 pro 32bits

They are the same as you. They must be the default settings. I checked it on my crashed PC and on a "normal" PC. I did not put the image since eveything is in french here!

So to resolve this problem i have came to theses conclusions:
1- Tell windows 7 to stop asking for a system restore when it is already disabled. I took a peek in the services in hoping to see a name that would match but i did not find anyhting conclusive till now.

2- Even if i succeed in resolving the precedent point, i still do not know for sure why my PCs are crashing.

Next thing: I will update the BIOS of the crashed PC and see what will happen.

My System SpecsSystem Spec
07 Feb 2012   #12

Microsoft Windows 8.1 Pro 64-bit

You can still post the pic, I have a translator. And that way I can be able to see what the screen looks like. Or you might be able to see if you can pull it from the internet.
My System SpecsSystem Spec
07 Feb 2012   #13

Windows 7 pro 32bits

OK i have put it in attachement.

I made theses tests:
- Updating the BIOS - same problem (i thought so but you never know).
- using msconfig - removed everything in the startup - same result
- tried to log in safe mode - PC blocks at classpnp.sys file.

This one a tough nut to crack indeed.
My System SpecsSystem Spec

07 Feb 2012   #14

Windows 7 x64 Ultimate

Any computer with any OS that is running and in the middle of doing anything has a high chance for failure when power is suddenly removed.

This is why UPSes are generally so important (of course that wont help here).

If you have people being /actively malicious/ then you need to go to greater steps to protect the OS using third party software. My old age is preventing me from remembering the name of the software at this moment. But basically it allows you to set an image state and then every time the computer is turned on it boots from that saved image. Meaning that nothing anyone does can harm the machine after a reboot.

This is a way to actually make this work without third party software but it took some real tinkering. (Called the EWF which saves all system disk writes to ram and never writes back to the hard drive therefore never puts the OS in a state where a power pull can do any damage. You can try looking up instructions for installing the Windows "Enhanced Write Filter" yourself on an experimental machine if you want. It works perfectly (or did on XP when I last used it))

Hopefully someone can remember the name of the commercial software for doing this...

[Edit] Here we go, there are others but this one seems highly regarded, called "Deep Freeze": [/edit]
My System SpecsSystem Spec
07 Feb 2012   #15

Windows 7 pro 32bits

Deepfreeze in one of these software. I know them.

As a proverb i once heard, Using this solution would be cutting the arm to remove a bruise on the finger. We would have to review all our infrastructure that is based on SCCM.
My System SpecsSystem Spec
07 Feb 2012   #16

Windows 7 x64 Ultimate

Well, it's a pain to deploy but is the pain of restoring broken PCs less? (It might be depending on your procedures). Turning off the write caching as explained above may help some, definately the low hanging fruit :) but not fool proof.

The EWF works miraculously on XP Not tried on Windows 7 though. No cost, setup is a PITA but you can do it once and clone the drive before activation... then deploy once to all PCs.
My System SpecsSystem Spec
21 Feb 2012   #17

Windows 7 Ultimate 32bit

Hi, I just installed Windows 7 in my Toshiba laptop and every time I unplug the power cord Windows crashes. In the same way, if I switch my laptop without the power cord and I plug the cord later on, it crashes too.

Is not very "portable" any more
I have no idea what would it be.... I replace the battery for a brand new one (and genuine - not because of this but I was needing it) and I'd done several updates (all of those you do when you format your computer).

Any ideas??

My System SpecsSystem Spec
21 Feb 2012   #18

Windows 7 x64 Ultimate

I assumed the OP was ta;ling about desktop computers (though maybe that was wrong).

Every laptop I've ever had handles having the adapter plugged and unplugged at will. So in this case I would guess that it's either a hardware problem with the laptop (either soething broken or that model just always does that) or maybe an update to the battery/charger drive. Which would be a VERY specific thing to that laptop model that you would have to get off the manufacturers website (if they have it).

If this laptop is < a year old and still in warranty I might think about just getting it exchanged this is definitely something you /should/ be able to do as it has been an expected behavior of laptops forever...

I would google that laptop model and problem and see if other people are having the same issue. If so then it may just be bad design on that model
My System SpecsSystem Spec
22 Feb 2012   #19

Windows 7 Ultimate 32bit

Hi fseal,
Is a laptop Toshiba Satellite M200 and is 3 1/2 years old :s

I had it previously running in Windows Vista and it started to switch off suddenly (absolutely random) since 6 months ago.... That's why I replace the battery too (I thought it could be related as the battery was that old). However it never switched off when plug/unplug the cord.

Now I install Windows 7 and it doesn't switch off suddenly but Windows crashes (it just freezes) when plug/unplug the cord.

I'll send it for a general clean of dust/etc (as I have never done it :s), but I think as well it might be hardware (unfortunately)
My System SpecsSystem Spec
02 Jun 2012   #20

windows 7

solution to your problem : go to power settings> change advance power settings> processor power management > system cooling policy ::: make it 'Active'' on battery.
Enjoy !!! I think problem happens as cpu clocks down to 5% to save power , when powercord is removed, instead of letting the fan run.
My System SpecsSystem Spec

 Removing the power cord makes Windows 7 crahes hard at the reboot.

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