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The Hydroman

ONT, Canada

1 edit

Constant disconnecting issue isolated to 1 comp on network

Hello everyone!

I am in need of your expertise to troubleshoot and solve a rather annoying problem I am having with a single computer on my network disconnecting/immediately reconnecting to wireless internet.

So for the past 3 days or so I've had this odd issue whereby my Win7Pro desktop PC keeps dropping it's wireless internet connection, and then 2 seconds after it drops, it reconnects as if nothing happened. I would describe it as a 'flicker' in the connection that happens every 3-5 minutes while online.

It APPEARS to happen only when I try and do something within my browser (load a new page), it also happens while on Skype (more frequently on Skype, maybe it drops when more information is being sent across the wifi), etc. For instance, it has happened twice (I've been watching the wireless internet access icon down in my taskbar) since I started typing this message.

What I see on my end is, the 5 'lit up bars' in the taskbar icon suddenly go grey, a little yellow circle appears, it 're-finds' my wireless network, and I'm back online.

Note: this does not happen on my other computers within my house. All other networked devices hold their connection constantly with no issue. Nothing happens on my modem/routers end (the lights don't change or anything).

The issue appears to be isolated to this computer only.

I figure that:
- Somehow a software setting for my wireless adapter got changed on my computer
- Somehow a setting within my router got changed and now it's not cooperating with my desktop PC
- There is something suddenly screwing with the wireless transmission (maybe my little antennae is crapping out on the back of my network card, my network card is dying)

**Nothing has changed within my computer since this started happening, nothing has changed in regards to my router/modem either. I haven't updated any hardware/software.

That being said, it may have started one day after I unplugged/restarted my router/modem because I had to move them to clean. But I am not certain about that. Since then I've re-started my router/modem and the problem persists.

But I really have no idea what it is, nor do I have any idea where to begin tackling this issue. But as you can imagine it's extremely frustrating so I would appreciate any help you can give me!

Additional info:

Windows 7 Pro OS 64-bit
Intel core i5-3550 @ 3.30 GHz
16 GB (8x2 RAM)
NVIDIA GeForce GTX 560 Ti
Thomson DCM425 Cable Modem
D-LINK Extreme N Gigabit Router (DIR-655)

When I go into device manager, it says:
Atheros AR9285 Wireless Network Adapter (it tells me the driver is up to date when I click 'update driver')

When I look at the box for the network card I actually bought:
TP-LINK 150 Mbps Wireless N PCI Express Adapter (Model #: TL-WN781ND)

(I'm not sure why it's named different in my device manager?)


Chicago, IL
Thats a difficult one. It does sound like something could be interfering with your wireless signal or could be a hardware issue. Do you have other wifi devices you can place next to your computer and see if signal or connectivity changes at the same time you loose connection on your PC?

Sometimes moving the wireless router just a foot or two can help if its an interference issue, but the fact that it just started recently is strange. Have you tried changing the wireless channel of your router?

The Hydroman

ONT, Canada
Hey interlync,

Thanks for the reply and sorry for my extremely delayed response! I was home for the holidays with family (and away from this computer) so I haven't had a chance to monitor the issue.

Right before I left for the holidays I purchased a:

TP-LINK TL-ANT2408C, Indoor 8dBi Omni Directional Antenna
»www.canadacomputers.com/product_ ··· d=026201
(Upgraded the tiny default antenna to this)

I know get full signal strength on my desktop PC that was dropping the connection (as described in my original post above) but the connection still drops. I used to not receive full signal strength so I was hoping this would resolve the issue, but it did not fix it.

- Connection drops whenever I try and do something on my browser (a page will be loading and it will take an abnormal amount of time, it will load up the default 'page cannot be displayed' in Chrome, and then I will see the wireless icon grey out)

- Immediately after the connection drops, it will reconnect within a split second and I can go about my browsing.

- I have a Macbook Pro running on wireless right beside my desktop that does NOT drop connection when my desktop does, so the issue appears to be isolated to this computer.

Any one else have any other ideas? Could it be an issue with my Network card? Should I get a new one? (It would be nice if it was just a software issue I could go about fixing though)


Chicago, IL
Is that desktop on wireless or wired? If they are both wireless, you may want to give apple a call. I do remember seeing a logic board issue with one of our MacBooks that caused a number of issues including wifi failures.

Also be sure to check your wifi settings in system prefs. Check Network | Wifi, and maybe remove any networks from the preferred list that are not your own. Or remove yours and let it re-add your wifi network.

The Hydroman

ONT, Canada
The desktop is the computer experiencing all of the problems described above. My desktop is on wireless. My desktop is also running Windows 7 Professional.

My wireless Macbookpro laptop doesn't drop connection, there's no problems with it. I just know that the problem with my connection dropping on my desktop is a problem WITH my desktop because I can see whenever a drop occurs that my other computer beside me (the laptop) is working fine/not dropping.