I have a hard LAN line running into my room (from our router) carrying both my internet access and my TV. It goes into a switch, where it is split between my PC and my U-Verse (IPTV) box.

I can watch TV just fine, but suddenly today I started experiencing internet issues on the desktop. I can chat over Disgby (AIM) but I can only view about 10% of web sites I try to view. Most web sites chrome says cannot connect. The ones that do work are slower than **** and often half the things on the page won't even load. Sometimes a little yellow caution sign will show up on my taskbar in windows 7 indicating there is a network problem, at which point I will lose all access (no web sites, no chat). This yellow signal will come and go.

Sometimes the entire problem will disappear and I can access everything for a few minutes, then it will return again.

All other computers on the network can access the internet just fine, including this one which is connected wirelessly.

Sounds like maybe a failing lan cable, or your switch is going bad. Does it still do this if you bypass the switch and connect directly to the computer or the IPTV box?

Anything changed on your computer? My windows was acting like that until I upgraded to the latest network card drivers, but it happened from the moment I built it, not just at random.

This has happened before, then it stopped for several months.

Bypassing the switch and just plugging the LAN cable into my PC fixes the problem. However is this a guarantee that the switch is the problem, and not something software regarding the ability to communicate through a switch? TV never had problems and it's always gone through the switch, and the problem has existed, and gone away in the past.

As far as your PC is concerned, it has no idea it's connected to a switch, nor does it care. If it's fixed by bypassing the switch, you might be either looking at a faulty cable from the switch to the PC, or the switch itself, or that port on the switch.

Update.

It's NOT the switch.

I've had the switch bypassed and I just had the problem.

Something to note, while I had the switch bypassed and it seemed to be working, when I would open up my browser, it would take awhile to load my home page and say "Resolving Proxy" at the bottom. I just tried reconnecting through the switch and now everything works fine and it *DOESN'T* say resolving proxy when I launch a browser and pages load much faster.

WTF

Perhaps you have some malicious software..?