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

03 Feb 2012   #1
gigueref

Windows 7 pro 32bits
 
 
Removing the power cord makes Windows 7 crahes hard at the reboot.

Hi,

I have a weird problem here that is giving me some headache since the potential trouble it could cause is great. Here is the problem:
When i remove the power cord of a cpu while working, it often makes windows 7 crashes hard.

1- When that happens, W7 by default makes a system restore. Since we don't want that, we removed this option.
2- Since the sytem restore has been desactivated, W7 reboot over and over again. i have to reinstall. Sometimes, even the safe mode (i think it's the english word) is not working.

This scenario does not happen everytime because sometimes W7 succeeds in "getting back" online. Sadly tough, the first scenario happens often.

I work in a school were the kids have 13-17 years old. Some of them discovered that "Feature" in W7 and they make W7 crashes on purpose and trust me they succeed quite well.

Another concern is that if there is power failure in the school, i'm afraid of what could happens to my W7. Since i have over 100 of them, you can see the reason why i am a little concerned here.

Finally, i asked a technician in another school to remove the power cord of a cpu as a test and it is the same result as me: The computer completely crashed. He had to reinstall.

So my question is this:
Is there a way to make W7 more stable when there is a cold reset? I do not have this problem with XP.

Thank you in advance for your help!


My System SpecsSystem Spec
03 Feb 2012   #2
DustSailor

Microsoft Windows 8.1 Pro 64-bit
 
 

Hello Gig, and welcome to sevenforums!

How are you disconnecting the CPU? Do you mean the PSU?

How does Windows make a system restore without power?

Even withut a system restore, windows shouldn't reboot again and again. Are you disabling the system restore feature correctly?

I'm not sure why you would need to reinstall simply for removing power to the computer, this should not happen. You may have to explain more, because I can remove power from my pc any time I want and it boots up just fine. It will display a message to boot into safe mode or continue in normal mode, and I just choose normal mode. I do this with any computer I've ever used.
My System SpecsSystem Spec
03 Feb 2012   #3
gigueref

Windows 7 pro 32bits
 
 

Hello Gig, and welcome to sevenforums! Thank you!

How are you disconnecting the CPU? Do you mean the PSU? I unplug the computer while it is up and running. Like a power failure in a certain way.

How does Windows make a system restore without power? When it reboot after being unplugged, W7 by default ask for a system restore. The problem is that the image W7 takes is the one we use for our clean images,. No software nothing. Not even in the domain.

Even withut a system restore, windows shouldn't reboot again and again. Are you disabling the system restore feature correctly? I know that's why i'm making this post. I do not understand how harsh W7 is when it gets a cold reset. The system restore is removed by hand or through GPO. The problem is not there i'm pretty sure.

I'm not sure why you would need to reinstall simply for removing power to the computer, this should not happen. You may have to explain more, because I can remove power from my pc any time I want and it boots up just fine. It will display a message to boot into safe mode or continue in normal mode, and I just choose normal mode. I do this with any computer I've ever used.I know that's why i'm so confused about all this. I have over 400 PCs under my charge right now and i have no idea what could cause that.
My System SpecsSystem Spec
03 Feb 2012   #4
DustSailor

Microsoft Windows 8.1 Pro 64-bit
 
 

Hello again Gig,

Assuming you have a computer or two to test this on -

First, make sure all drivers are updated and that you have all important windows updates installed. Believe it or not, this is important.

Next, look at the picture I post and make sure your settings are all set properly on your own PC (note that the picture is set to not use system restore):
Attachment 196594
You can also follow this link for more detail: Turn System Restore on or off

Besides all of that, run these tools to see if they can discover any corrupt files. Don't skip over any of the important reading in the tutorials:
SFC /SCANNOW Command - System File Checker
Startup Repair

Now when you perform a 'power outage', try shutting the computer down by holding the power button. Let me what screen comes up. If it does what you want, then try yanking the cord out of the wall.

PS it isn't healthy for a PC for you to do that. Also, you can create a new system restore and/or system image that can help you in the event of a catastrophe.
My System SpecsSystem Spec
05 Feb 2012   #5
gigueref

Windows 7 pro 32bits
 
 

Hello again Gig, Same for you!

Assuming you have a computer or two to test this on - Indeed i have some with me

First, make sure all drivers are updated and that you have all important windows updates installed. Believe it or not, this is important. Already checked, all drivers taken directly form the manufacturer for every model (we only got lenovo computers). We have our own WSUS server that makes the windows update on every PC here.

Next, look at the picture I post and make sure your settings are all set properly on your own PC (note that the picture is set to not use system restore):
Attachment 196594
You can also follow this link for more detail: Turn System Restore on or off
This is exactly where i go when i want to turn off the system restore. Our GPo does the same thing too.

Besides all of that, run these tools to see if they can discover any corrupt files. Don't skip over any of the important reading in the tutorials: I will check that and come back to you.
SFC /SCANNOW Command - System File Checker
Startup Repair

Now when you perform a 'power outage', try shutting the computer down by holding the power button. Let me what screen comes up. If it does what you want, then try yanking the cord out of the wall. OK i will do that too.

PS it isn't healthy for a PC for you to do that. Also, you can create a new system restore and/or system image that can help you in the event of a catastrophe.

Thank you for your help. I will come back to you monday or tuesday
,
My System SpecsSystem Spec
06 Feb 2012   #6
Layback Bear

Windows 7 Pro. 64/SP-1
 
 

Okay I'm a dummy. Why would one do this to a computer. Shut the computer down in normal fashion and if needed for what ever reason unplug the power supply. If this is being done because their has been a power loss, just turn off your surge protector, (you do use a surge protector don't you). When the power comes back on turn your surge protector back on which gives power back to your power supply and boot, select normal boot. The only thing that will be different is you will have lost the work you were doing when the power went down. If you haven't had a power loss from the wall socket don't unplug anything, shut down normal and turn off the surge protector. Good surge protectors work even when they are turned off.
My System SpecsSystem Spec
06 Feb 2012   #7
profdlp

Main - Windows 7 Pro SP1 64-Bit; 2nd - Windows Server 2008 R2
 
 

Quote   Quote: Originally Posted by Layback Bear View Post
Okay I'm a dummy. Why would one do this to a computer...
Quote   Quote: Originally Posted by gigueref View Post
...I work in a school were the kids have 13-17 years old. Some of them discovered that "Feature" in W7 and they make W7 crashes on purpose and trust me they succeed quite well...
Remember when you were a teenager? I do...
My System SpecsSystem Spec
06 Feb 2012   #8
gigueref

Windows 7 pro 32bits
 
 

hello everyone,

As promised i made the tests you asked:

Now when you perform a 'power outage', try shutting the computer down by holding the power button. On my three tests on three differents PCs, it always indicate the message where i can logging normally with Windows normally or use the safe mode. All is normal there.

Let me what screen comes up. If it does what you want, then try yanking the cord out of the wall.
Weird, they do the same messages as if i hold down the power button... No crash no system restore... And i tried more than one time to crash them. I'm really confused right now

"Besides all of that, run these tools to see if they can discover any corrupt files. Don't skip over any of the important reading in the tutorials:"
I did the sfc /scannow on a crash PC. Since i was unable to log in it i used Winpe to access the HD. To my surprise sfc was giving a message that it would'nt work since there is a system restore being scheduled... Crap...
I rebooted the computer and waited to see if it would come to the login window. It did after 15 minutes! I logged in and finally was able to make a sfc /scannow. The scan worked well and i had no error message.
Still after rebooting the same thing again! W7 always want to make a system restore. Is there a registry key or anything to tell to Wondows 7 to stop asking for a system restore is cases like this? I feel like it's gonna be my solution because after the 15 minutes login, W7 acts normally but if i have the bad idea to reboot he always try to make a system restore.

Nice day!
My System SpecsSystem Spec
06 Feb 2012   #9
DustSailor

Microsoft Windows 8.1 Pro 64-bit
 
 

Hello gig,

Unfortunately, I've never seen or heard of this error before. A picture may help if you would be able to somehow get one on here. But even so, I may not be able to help. I have no idea what causes such a problem. Perhaps, if you are able, clean install windows 7, install all updates and drivers, disable system restore, and then try holding down the power button. My guess is it is something on your computer that is causing this problem, as it doesn't happen to mine.
My System SpecsSystem Spec
06 Feb 2012   #10
profdlp

Main - Windows 7 Pro SP1 64-Bit; 2nd - Windows Server 2008 R2
 
 

What are the Write-Caching settings on the hard drives?
My System SpecsSystem Spec
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 Removing the power cord makes Windows 7 crahes hard at the reboot.




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