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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 Just a thought here

That's a good idea, I might have another power bar lying around I could try.

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Update to problem

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

I first noticed it in Dragon age, but thought nothing of it as an upgrade I did said I could run out of video memory and cause funky artifacts, but just playing oblivion, this happened, it has never happened before.
http://trevorsarchives.selfip.net/temp/oblivion001.png (1.9mb)
This isn't the only one I saw, it was just the funniest :).


So its looking like my video card is dying, do you guys agree? Unsure how this could cause the computer to restart when I walk passed it, but it would explain the shutdowns when watching movies.

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Reponse To Answer

by Who Am I Really In reply to Update to problem

moving one direction versus another changes the airflow in the room
going one way may move cooler air
and moving another direction may move warmer air

if yer video card is gunked up, overheating and ready to go pop moving warmer air may just put it over the edge and the system shuts down

does your card have monitoring software?
ie.
the ASUS card I have uses Smart Doctor to monitor
- fan speed,
- memory and GPU temps,
- memory and GPU clock speeds

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Reponse To Answer

by Slayer_ In reply to Update to problem

Yeah, video card reports its running cool, 60-70C under load.

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Reponse To Answer

by Slayer_ In reply to Update to problem

Under the extreme burn test, it reached about 90c, still within operating range. (Though barely :) )
http://www.ozone3d.net/benchmarks/fur/#techdata

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Hello SinisterSlay. I have a spare video card if you need one..

by Peconet Tietokoneet In reply to Computer turning off and ...

It is a:
NVidia GeForce 9800 GT
* 600MHz core clock
* 112 stream processors
* 1,500MHz
* 512MB GDDR3 RAM
* 256-bit memory interface
* 1.8GHz memory clock

Similar to this one:
http://www.nvidia.com/object/product_geforce_9800gt_us.html

Like i said it is a spare to me just laying around and fully working.
PM me and see if we can come up with a price unless you have a spare/new one already. Need to know about the postage weight first though but if you need it we can sort that out also.

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Reponse To Answer

by Slayer_ In reply to Hello SinisterSlay. I hav ...

I would expect the shipping from Finland would be expensive, but how would you have me pay for it? A new 9800 GT is worth about 100-120 Canadian.

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Re: spare video card....

by Peconet Tietokoneet In reply to Computer turning off and ...

This card is not new, just second hand but working.
It only cost me 10 euro (About $13 Canadian dollars) so with postage packing say around 40 euro ($54 Canadian dollars). I can get nearly any second hand video card (given time). We have a recycling center here in Oulu in Finland that handles every component you can think of from memory, motherboards, power supplys, old servers and processors. If you are still interested i can send you my email. The price of packaging and postage might be cheaper, i just pulled the prices from my head so to speak. :) If you have a bank account you just need to do a bank to bank transfer. I can give you the details that is no problem.

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Reponse To Answer

by Slayer_ In reply to Re: spare video card....

If you reply to your own message, it stacks it under the replies to the original answer, put simply, click reply on your own post.

I have never done a bank to bank transfer before. I use a credit union, I don't know if that would throw a wrench into it either.
I am thinking of buying one of these anyways.
http://www.memoryexpress.com/Products/PID-MX31479(ME).aspx
(Copy and paste the link, the brackets mess up TR clickable links)

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Reponse To Answer

by Peconet Tietokoneet In reply to Re: spare video card....

Well that graphic card is even cheaper than mine. :)
Joking of course. Nice card. Bank to bank transfer is easy, the banks do it on your behalf while you are in the bank so that you can check to see if ALL of the information that you gave the bank is ok so that they can forward it over here, sometimes it is free to do a bank to bank transfer sometimes there's a fee.

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