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I have internet connectivity, but I can't browse, download or use Dropbox. Help?

post #1 of 9
Thread Starter 
Well, the problem exists in my main rig and it started this night for no apparent reason.

When I turn on my PC, I can browse, sync Dropbox and make Skype calls. A few minutes later, for some strange reason, I can't browse the web with ANY browser, make Skype calls, sync my Dropbox Folder or download files with Internet Download Manager. However, when I run a ping test from cmd (ping www.google.com) I do get a response with a latency of 35ms (Pretty normalfor an ADSL2+ connection).

My Internet Security suite is AVG Internet Security 2013. I already tried turning off and on the firewall and other defense mechanisms of the suite, without any luck. I also tried to run an AV scan, yet I found nothing. I also have an Alfa AWUS036H WiFi adapter. I connected to another WiFi network nearby to test connectivity, but the same issue showed up.

What could it be? I don't have any program like Connectify installed (This is a clean install). I have no idea what's going on and it's frustrating.

Already discarded the modem as the source of the issue, because I can use that connection over WiFi just fine with my laptop and phone.
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post #2 of 9
try uninstalling avg.

Turning off avg functions doesn't always turn off what you think you are. If everything works get a new AV suite. (preferably one that works)

If everything is the same look else ware.

Also check for ad blockers and stuff like that which might interfere.
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post #3 of 9
NIC going bad?

do you have another NIC you could use just to test if the old one is going bad? even a WIFI USB one would work for testing.
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post #4 of 9
Try clearing all proxy settings, if there are any...

Have you tried multiple browsers?
Edited by newbrevolution - 4/5/13 at 7:07am
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post #5 of 9
Thread Starter 
Quote:
Originally Posted by Jim888 View Post

NIC going bad?

do you have another NIC you could use just to test if the old one is going bad? even a WIFI USB one would work for testing.

I'm not sure if it's the NIC, but it can't be my Wireless adapter. It's a USB one, I just tried it with my laptop for test purposes and it works without problems. So it has to be either the NIC, or something else.

Again, I can do a ping test through CMD just fine and download files with uTorrent without problems, but can't guarantee connectivity.
Quote:
Originally Posted by newbrevolution View Post

Try clearing all proxy settings, if there are any...

Have you tried multiple browsers?

Yes. I've tried multiple browsers, yet I had no luck.
And I don't use any proxy, so I doubt that can help.

The networking and sharing center indicates everything is ok.
Edited by Icekilla - 4/5/13 at 9:22am
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post #6 of 9
Virus perhaps?

Try running in safe mode with networking.

And specific actions seem to prompt the problem?
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LIttle Giant
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post #7 of 9
Thread Starter 
Ok, I'm in safe mode with Networking activated. What should I do now?

I'm also running a scan with MalwareBytes and AVG

Something i forgot to add: For some reason, sometimes the issue si triggered by Internet Download Manager when pausing a download. But many other times, the issue arises by itself.
Edited by Icekilla - 4/5/13 at 11:28am
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post #8 of 9
Quote:
Originally Posted by Icekilla View Post

Ok, I'm in safe mode with Networking activated. What should I do now?

I'm also running a scan with MalwareBytes and AVG

Something i forgot to add: For some reason, sometimes the issue si triggered by Internet Download Manager when pausing a download. But many other times, the issue arises by itself.

try your normal activities and see if the same happens
LIttle Giant
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Old HP upgraded
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LIttle Giant
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Old HP upgraded
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RAMHard DriveHard DriveMonitor
16GB Corsair 1600  Samsung 840pro Samsung 500 GB 2.5" 7200 HDD Asus VG236h 120hz  
KeyboardPowerCaseMouse
Corsair K90 Corsair 500w Bitfenix Prodigy  Logitech G9x 
Mouse PadAudio
Rocketfish Hard dual sided Creative 2.1 speakers/Razer Megalodon/Charasis  
CPUMotherboardGraphicsRAM
I5 2500k Asus P8Z68-lx XFX 685X Pny 
Hard DriveHard DriveHard DriveOptical Drive
Wd caviar black FAALS Wd caviar blue  Ocz agility 2 Ssd Asus dvd burner 
CoolingOSMonitorKeyboard
Frio Win 7 home premium Hp 2207 Logitech G11 (rev 1) 
PowerCaseMouseMouse Pad
Pc power and colling 775w Antech 900 Logitech G9x Rocketfish 
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Razer megalodon 
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Athlon X2 4800+ ESC Nettle2 Asus 5770 wd Black 
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SSD OCZ agility II Win 7 home Premium  Hp w2207 Logitech G11 
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post #9 of 9
Thread Starter 
I uninstalled both AVG Internet Security 2013 and Internet Download Manager, cleaned the registry with CCleaner and reinstalled the latest versions of those programs. So far, so good.
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