Question

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Computer turning off and on, on its own....

By Slayer_ ·
Ok, so this is strange.

It started off two days ago, I closed a cabinet in my room, and when I stood up, my computer turned off and restarted (my computer is set to stay off in a power outage). I figured, maybe it vibrated the video card, its happened before. Ok.
So I wiggle the tower a little, no issues. Stand up, walk passed it from right to left across the front of it, and it restarts again, wtf?

It didn't occur to me yet, but ok, so I just turned it back off (held power button) and walk away. I came back to put the item back in the cabinet, walked passed the machine from right to left again and the computer started itself!
So I waited for it, got to the login screen and it froze at the login....
So I hard restarted it, froze immediately after login, hard restarted again and it was running, but suddenly now, it didn't like resolutions under 1280 x 1024, anything less and it left about 50% black space on the screen on either side (25% on the left, 25% on the right). So I rebooted, I could see the windows logo and post was getting squished. Then it booted up again and 3 seconds after logging in, the screen turned black and white!
I thought maybe my old monitor dying, so I turned on the second monitor and turned on duel view, black and white on both!

So reboot again, same problem. So I go update the video drivers. Problem solved, but it still hates the resolutions. Ok, screw it, moving on.
Last night, it shut down again while watching a movie, it would not beep at the post for the first few tries, then it fired up after I unplugged it for a bit.

Now brings me to today, when I made the real connection.
I fired it up, and walked out to change the TV channel, I came back to grab the stereo remote out of the cabinet, and when I walked passed the computer, from right to left, I heard it restart. So I stepped back, and repeated my walk, and sure enough, it restarted again the very moment I stepped on the carpet.

So I tried standing there, lifting my foot up and down, etc, nothing. Only when I walked passed it. I made sure I did not rub the case, I even tried walking passed it naked, it still restarted! Then I closed the front door on my case (One of those cases that can cover the CD drives) and walked by it, it restarted one more time, so I tried again, on my last walk through, my monitor made a click sound and the video re snapped to the edges properly again. And it has stopped restarting when I walk passed it (for now anyways). I now take the long way around my computer to avoid walking in front of it.


WTF????? Any thoughts?

Edit-
I double checked, all my games that suddenly had problems with the resolution are fine again.


Edit-
Here is a folder of images.
The silver computer is the one with the problem. Its ventilation is on the front, left and rear, the right side is where the board is mounted, so no fans. So I can't see there being any ventilation issues.
http://trevorsarchives.homenet.org/temp/PC%20Pics/


Edit-
It has started doing it again. I have removed the filter on the power, its still doing it. But the monitor and display seem fine so far.

Edit-
Confirmed that the monitor is causing some problems, I can smack it and have the edges of the screen wiggle or even snap to the sides, to the top, etc.
By keeping the door closed the restarting has stopped. I'm starting to wonder if static is affecting the reset button, the next time I am in the case I am going to unplug the reset button and see if that solves the problem.

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All Answers

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Reponse To Answer

by Slayer_ In reply to OK, a couple of points to ...

But the power cables can be strapped together and moved away, is that correct?

Also, should the power cables avoid contact with the case, cause presently, not sure if you can tell from the pictures, both power bars sit on top of the white machine, and the power lines are draped down between them. That would technically be the mother board side of the silver machine, the one with the problems.

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Reponse To Answer

by Deadly Ernest In reply to OK, a couple of points to ...

As a general rule it doesn't hurt anything to have the power cables near each other as they aren't carrying any signals that can be interfered with. The Electromagnetic field will only set up an echo current, as the worst possible damage - ie a current when that cable is not powered up. The power boards will also have an electromagnetic field around them, and these should also be separated or shielded from the data cables and the electronic components.

In most cases a few finger widths is all that's needed as the field is weak, but electronics are touchy things and you can never know for sure, as some components are more susceptible to interference than others.

In most cases PC's have their PSU at the top of the case and the motherboard is four or five inches lower down, thus a power board on the top of the case shouldn't affect the motherboard, but may affect a hard drive that's set right at the top of the case.

A basic home made shield can be a couple of sheets of rubber, say some old thick rubber mouse pads, with a sheet of aluminium foil between them and the foil earthed to the steel frame on the shelf above the computer. If it is a EM force field issue from the power boards, that should redirect it away from the PC and protect the PC. But you really shouldn't need to go to this extreme due to the note above re psu location.

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Very nice

by amitmaniar In reply to Computer turning off and ...

Thats an innovation.
Just kidding !!!
Check your RAM. Might be not plugged well.

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Reponse To Answer

by Slayer_ In reply to Very nice

I gave them a push and tug, it seems locked in.

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Unplug

by dogknees In reply to Computer turning off and ...

Remove all except the KB, mouse and screen from the PC. Plug the PC into a socket and disconnect ALL other equipment in the area from the power.

Then try it and if the ghost goes away, start adding one device at a time until he(she) returns.

Also look for the Wakeon settings in your bios and disable those you don't need.

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Reponse To Answer

by Slayer_ In reply to Unplug

Each computer has its own power bar, so this is doable. Though I will have to wait for the ghost to return first :).

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Reponse To Answer

by Slayer_ In reply to Unplug

As for the wakeon settings, that could explain how it started itself, but not how it keeps restarting itself when I walk passed it from right to left.

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You're Not Alone

by dogknees In reply to Computer turning off and ...

Many years ago we had a person who told us that their PC was turning itself off AT THE WALL!!! They swore that the switch on the outlet was being turned off when they weren't looking. Not only that, they said they could hear something behind them when it happened, but couldn't see anything when they turned and looked.

We never did find out the real cause, but to this day he still believes it happened. As he's now a Partner in the firm, we tend to keep it quiet.

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Reponse To Answer

by Slayer_ In reply to You're Not Alone

Maybe I am a ghost? And I am causing the interference?

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Maybe this is the result of all the masturbation?

by Slayer_ In reply to Computer turning off and ...

The computer can't bear to look at me when I walk passed, full leg spread, so it shuts down and restarts? And then I accidentally blinded it and it could only see in black and white?

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