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Windows 7: PC reboots if someone walk by

28 Feb 2010   #41
churin

W7 Ult x64 and W8 Pro x64
 
 

Quote   Quote: Originally Posted by Dwarf View Post
It's worth a try, but no guarantees. I must admit that I am a little bit stumped by this as it is a most unusual problem.
I am well aware of that. I want to have the part around anyway.


My System SpecsSystem Spec
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28 Feb 2010   #42
churin

W7 Ult x64 and W8 Pro x64
 
 

Quote   Quote: Originally Posted by Romulinx2 View Post
Hi, have you checked for stray strands or just one strand of wire sticking out where the reset switch is connected to mobo. It could be touching something?
It is one strand of wire about 12 inches in length with a reset switch fitted on one end. It could not stand itself so that it was touching something around.
Quote:
Also check the main power supply cable from your wall socket, it could be a loose wire?
If connected to a filter after the main socket check for loose wires also.
If you haven't got a filter it could be transient/spikes in the voltage from the main power supply in your home.
There is a USP between the PC and the AC outlet. I have been using the same AC outlet, the same USP and the same AC cord to PC for the last ten years(the battery was replaced 3 times during that time). I built four different PCs so far and the first three did not have this problem.
My System SpecsSystem Spec
28 Feb 2010   #43
churin

W7 Ult x64 and W8 Pro x64
 
 

I have read the links.

Quote:
Remove all hardware from the motherboard. DVD drives, video cards, hard drives, etc.
I have tried this but no avail. The video card could not be removed because the mobo does not have integrated video.

Quote:
Actually, to make this as fail-proof as possible, remove the motherboard from the case as well.
I assembled the hardware system without using any case and installed the W7. After confirming everything was working fine, it was moved into the case.
My System SpecsSystem Spec
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28 Feb 2010   #44
Darryl Licht

Windows 7 Ultimate 64 bit Steve Ballmer Signature Edition
 
 

Just another idea... have you reset the BIOS to factory defaults?

And everything worked fine outside of the case??? Strange indeed!
My System SpecsSystem Spec
28 Feb 2010   #45
churin

W7 Ult x64 and W8 Pro x64
 
 

The following is what I have determined :
1. Discharge of static electricity is cause of the problem not loose wire or intermittent connection, etc.
2. Discharge of static electricity into the reset cable only causes the rebooting problem. There are many cables and wire strands including the reset wire that are bundled together and neatly routed in the case(done by case vendor) but as long as the reset wire is unplugged from the mobo, the resetting does not happen.
If a separate strand for the reset wires as shown below is used, then discharging static electricity into the top plastic piece of the case does not cause resetting, but if the discharging is done into somewhere in the twisted strand, then resetting happens.
The problem seems to be that the reset wire's switch side end is held by a plastic piece. If this is made of metallic material and is integral part of the steel case, the problem would not happen.


Attached Thumbnails
PC reboots if someone walk by-img_4513x.jpg  
My System SpecsSystem Spec
28 Feb 2010   #46
Darryl Licht

Windows 7 Ultimate 64 bit Steve Ballmer Signature Edition
 
 

Have you tried the on off switch in place of the reset switch... they are the same except a reset is a momentary switch... while on off is a regular switch. This might help show if it is just a bad/shorted reset sw... You can turn on system by using a spare jumper and shorting the on/off switch pin header on mobo.
My System SpecsSystem Spec
28 Feb 2010   #47
churin

W7 Ult x64 and W8 Pro x64
 
 

Quote   Quote: Originally Posted by Darryl Licht View Post
Have you tried the on off switch in place of the reset switch... they are the same except a reset is a momentary switch... while on off is a regular switch. This might help show if it is just a bad/shorted reset sw... You can turn on system by using a spare jumper and shorting the on/off switch pin header on mobo.
The switch as shown in the picture on my previous post is a spare switch not the one which came with the case. It did not have any effect on the problem.
My System SpecsSystem Spec
28 Feb 2010   #48
Darryl Licht

Windows 7 Ultimate 64 bit Steve Ballmer Signature Edition
 
 

Dang this ones a beeeyatch!

If I had the same issue... works fine outside case... doesnt work in case... I'd have to try a different case.

OR...you have one of those new coolermasters I see from the photos... painted or powdercoated in and out.... hmmm I wonder if it is a ground issue due to that paint???

Is there a chassis ground wire? If so, use a star washer under to bite into the coating and get a good ground... http://product-image.tradeindia.com/...tar-Washer.jpg
My System SpecsSystem Spec
28 Feb 2010   #49
churin

W7 Ult x64 and W8 Pro x64
 
 

Quote   Quote: Originally Posted by Darryl Licht View Post
If I had the same issue... works fine outside case... doesnt work in case... I'd have to try a different case.
As I already stated in my earlier post, that will most probably solve the problem. But I would rather remove the reset switch instead.

Quote:
OR...you have one of those new coolermasters I see from the photos... painted or powdercoated in and out.... hmmm I wonder if it is a ground issue due to that paint???
Yes, it IS a ground issue, but not due to the paint but due to the plastic part used for the case as stated in my previous post.
The case is CM STORM(SGC-2000-KKN1-GP) and the part assembly on the top side of the case is made of plastic material which holds switches(pwr,reset), LEDs, connectors(eSata, usbs) on ends of the cables and the wire strands running from the mobo.
My System SpecsSystem Spec
28 Feb 2010   #50
Darryl Licht

Windows 7 Ultimate 64 bit Steve Ballmer Signature Edition
 
 

Pehaps use a little sandpaper around the holes for mobo standoffs?
My System SpecsSystem Spec
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 PC reboots if someone walk by




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