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Hi, i recently got a kinda "big" problem.
I was running a dual monitor setup for nearly 1 year without any troubles.
One day i was playing i think LA Noire and in the middle of the game my second monitor started to go dark and came back on a minute later or something. But my internet connection went to no connectivity.
And i couldn´t get it to run with this monitor again after that day. I plug that monitor in and like 5-10 minutes later the internet stops working. I plug it out and the internet comes back up again. The connection is still working on every other device in the house when i have this monitor plugged in.
When i tried my to plug my tv as second monitor i don´t get any problems.
And that´s kinda my problem. Hope i could explain it detailed enough.
tl.dr.: My second monitor makes the internet stop working on this pc.
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Well that takes the cake for weirdest problem I've heard about in a week. Don't you just love debugging hardware problems? 
I would speculate that you have some kind of weird shorting / interference issue. But I have no data to back that up, so it's mostly a cop-out theory I pulled out of my ass that is no help to you.
Anyways, useful information for subsequent posters to help you with your problem:
1) What type of sockets? (dvi-d, hdmi, vga? combination of two? is the tv different from your second monitor?)
2) Using onboard motherboard plugs, or gpu?
3) Wired internet? Going through your motherboard?
4) If possible, does it happen in multiple OS's? (boot into linux, off of a CD if you don't have it installed)
5) When you say your internet has no connectivity, do you mean that the connection in your tray turns into a red-x type dealy? Or if open up a command prompt, do you still see useful info from an ipconfig (gateway, etc)?
And random things I would personally try out of desperation, that probably won't help at all:
1) Update graphics drivers
2) Update ethernet (wireless?) drivers
3) Open case and look for suspicious wires near the ethernet socket
4) Try different cables (monitor, ethernet)
5) Pray to pagan gods and dance around a fire
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Sounds like an EMI leak.
did you unplug the monitor from the computer or the power?
If the power, check that the wire going into the back of the computer is secure.
Do you use wired or wifi internet?
If wired, check if any of the internet cables are run parallel to the monitor cables, and separate/isolate them if they are.
If wireless, try moving the monitor to the other side of the PC as the wifi antenna, and if that doesn't fix it try replacing the monitor cables. If it does fix it, you probably have something more significant wrong with the monitor and if it's under warranty have it repaired.
If you find the EMI leak, you may be able to fix it with aluminum foil.
It's also possible there's a short somewhere between the two circuits. Try blowing all the dust out of the case, especially anywhere near the gpu/internet connections.
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Well the second monitor and the main monitor are totally different also my tv is a completly other product.
If i unplug the power from the second monitor it´s working fine. As long as it is showing nothing the internet works. It´s a Cable Internet with a wireless option that´s running too (for iphones) but the computer is pluged in via ethernet cable.
There is only windows 7 running and booting without cd.
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On April 08 2012 17:53 SoulWager wrote:
Sounds like an EMI leak.
Yes I agree, this was my only real guess as well. However, the OP must have some seriously janky-ass cables if that's the case. You should be able to physically bind gob-fuck-tons of cables together with twist ties, and have no interference issues. Modern cables are supposed to be built to avoid this problem. (Mostly referring to power, DVI/VGA, etc, I understand that the vast majority of cat5 cables you run into are unshielded)
OP, still would be useful to try different cables, ESPECIALLY if the cable you use for your tv is different than the cable you use for your 2nd monitor.
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yes it´s a different cable so i guess i will try another monitor soon and see if this works. Maybe it just broke or something
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Is it a different socket (do you connect it to the same place on your computer)? If it's the same socket, I have no fucking clue. If it's a different socket maybe you've got some interference or shorting problem there.
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EPT
