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Windows says I'm connected to the internet but no pages can be loaded!

Last response: in Networking
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February 11, 2013 10:41:33 PM

Hi y'all!

Here's what happened to my computer : a few days ago there was a very short power cut that lasted 30 secs, which turned my computer off. When the power came back, I had that reflex of turning my computer back on and mysteriously another power cut occurred that lasted about 30 secs as well. Ever since my computer hasn't been able to go on the internet...

I've tried many things :
- make a master reset on the modem (it worked temporarily)
- restart my modem
- cut the power off the modem for 10 secs
- change the wire that connects my pc to the modem
- change from port A to port B on the modem
- restart my pc
- uninstall my Lan card's driver and reinstalling it from the device manager on win 7

The only thing I think is left to try is maybe buying another network card which I am not sure if it would solve my issue.

Also the lights on the modem are all solid.

I have two PCs connected to this modem, one that is mine (the broken one) and the other belongs to my brother, although mine can't have any access to internet, my brother's seems to be working flawlessly. I'm actually writting this thread on his pc.

Another thing that I found really weird is that on the windows taskbar it says that I'm connected to the internet, but when I'm trying to load a random page on the internet, firefox tells me "The connection has timed out".

Oh and by the way, my computer still seems to recognize my Lan card : Realtek PCIe GBE family controller.

Has my Lan card been fried by the power cuts?

hopefully someone here may enlighten me on this! :) 

PC specs, just in case? :
i5 3570k
radeon HD 7870
Asus motherboard P8Z77-V LK
120 ssd OCz vertex 3
1tb HDD
Kingston HyperX 8gb
Corsair power supply TX650
Windows 7 professional 64-bit

Bought all the parts separately and assembled the computer myself.
February 11, 2013 11:00:24 PM

This is the danger of not using a UPS. Even a cheapo UPS that gives you a lousy 5 mins runtime can help prevent these sudden ON/OFF events that can cause all kinds of problems. And it can very difficult to pin down whether it's a hardware failure, or perhaps just some files that got corrupted.

I assume you're actually using a router (or modem+router combo device) since you're sharing the internet access. Can you do any local networking, such as share/transfer files? That would at least tell us if this is a problem specific to the internet, or ANY network activity, local or internet (and thus perhaps a hardware failure).
m
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February 11, 2013 11:14:29 PM

Hi,
thx for the quick reply ! I am actually using a UPS I just forgot to mention it. And yes I am also using that modem + router combo you're talking about. Let me try to share files (first time doing this, not so sure how)
m
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l
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February 11, 2013 11:31:34 PM

Hi again, I cannot seem to join a homegroup since windows on the broken pc cannot detect the homegroup. Would that mean there is a hardware failure?
m
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l
February 11, 2013 11:39:25 PM

Are both PCs running Win7 and using homegroups?

Also, let's see your network config.

Hit Windows key + R, copy/paste the following into the box, and hit enter.

cmd /c "ipconfig /all > %tmp%\tmp.txt && start notepad %tmp%\tmp.txt"

This will open a file detailing your network configuration. Cut and paste the contents to this forum.
m
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February 11, 2013 11:47:01 PM


Windows IP Configuration

Host Name . . . . . . . . . . . . : Kevin-PC
Primary Dns Suffix . . . . . . . :
Node Type . . . . . . . . . . . . : Hybrid
IP Routing Enabled. . . . . . . . : No
WINS Proxy Enabled. . . . . . . . : No
DNS Suffix Search List. . . . . . : home

Ethernet adapter Local Area Connection:

Connection-specific DNS Suffix . : home
Description . . . . . . . . . . . : Realtek PCIe GBE Family Controller
Physical Address. . . . . . . . . : 50-46-5D-66-4B-A1
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes
Link-local IPv6 Address . . . . . : fe80::89e3:ef2d:a221:ff2c%16(Preferred)
IPv4 Address. . . . . . . . . . . : 192.168.2.21(Preferred)
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Lease Obtained. . . . . . . . . . : February-11-13 5:29:44 PM
Lease Expires . . . . . . . . . . : February-14-13 5:29:44 PM
Default Gateway . . . . . . . . . : 192.168.2.1
DHCP Server . . . . . . . . . . . : 192.168.2.1
DHCPv6 IAID . . . . . . . . . . . : 273696349
DHCPv6 Client DUID. . . . . . . . : 00-01-00-01-18-3E-A0-11-50-46-5D-66-4B-A1
DNS Servers . . . . . . . . . . . : 192.168.2.1
NetBIOS over Tcpip. . . . . . . . : Enabled

Tunnel adapter isatap.home:

Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . : home
Description . . . . . . . . . . . : Microsoft ISATAP Adapter
Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
DHCP Enabled. . . . . . . . . . . : No
Autoconfiguration Enabled . . . . : Yes

Tunnel adapter Teredo Tunneling Pseudo-Interface:

Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Teredo Tunneling Pseudo-Interface
Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
DHCP Enabled. . . . . . . . . . . : No
Autoconfiguration Enabled . . . . : Yes
IPv6 Address. . . . . . . . . . . : 2001:0:9d38:953c:243e:8de:bea3:1b8b(Preferred)
Link-local IPv6 Address . . . . . : fe80::243e:8de:bea3:1b8b%12(Preferred)
Default Gateway . . . . . . . . . : ::
NetBIOS over Tcpip. . . . . . . . : Disabled

this is what came out from the broken pc
m
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l
February 11, 2013 11:49:32 PM

Now go to the PC that's working and do the same thing, I want to compare them.
m
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l
February 11, 2013 11:51:52 PM


Windows IP Configuration

Host Name . . . . . . . . . . . . : Kevin-PC
Primary Dns Suffix . . . . . . . :
Node Type . . . . . . . . . . . . : Broadcast
IP Routing Enabled. . . . . . . . : No
WINS Proxy Enabled. . . . . . . . : No
DNS Suffix Search List. . . . . . : home

Ethernet adapter Local Area Connection:

Connection-specific DNS Suffix . : home
Description . . . . . . . . . . . : Intel(R) 82567V-2 Gigabit Network Connection
Physical Address. . . . . . . . . : 00-25-11-39-72-D8
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes
Link-local IPv6 Address . . . . . : fe80::1d50:6151:bd24:a7c8%11(Preferred)
IPv4 Address. . . . . . . . . . . : 192.168.2.10(Preferred)
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Lease Obtained. . . . . . . . . . : February-11-13 4:11:38 PM
Lease Expires . . . . . . . . . . : February-14-13 4:21:56 PM
Default Gateway . . . . . . . . . : 192.168.2.1
DHCP Server . . . . . . . . . . . : 192.168.2.1
DHCPv6 IAID . . . . . . . . . . . : 234890513
DHCPv6 Client DUID. . . . . . . . : 00-01-00-01-14-F7-65-7D-00-25-11-39-72-D8
DNS Servers . . . . . . . . . . . : 192.168.2.1
NetBIOS over Tcpip. . . . . . . . : Enabled

Ethernet adapter Tunngle:

Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : TAP-Win32 Adapter V9 (Tunngle)
Physical Address. . . . . . . . . : 00-FF-D8-BD-E0-68
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes

Ethernet adapter Hamachi:

Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Hamachi Network Interface
Physical Address. . . . . . . . . : 7A-79-19-24-DF-42
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes
IPv6 Address. . . . . . . . . . . : 2620:9b::1924:D f42(Preferred)
Link-local IPv6 Address . . . . . : fe80::5045:8bd2:5373:981a%18(Preferred)
IPv4 Address. . . . . . . . . . . : 25.36.223.66(Preferred)
Subnet Mask . . . . . . . . . . . : 255.0.0.0
Lease Obtained. . . . . . . . . . : February-11-13 4:11:38 PM
Lease Expires . . . . . . . . . . : February-11-14 4:13:45 PM
Default Gateway . . . . . . . . . : 2620:9b::1900:1
25.0.0.1
DHCP Server . . . . . . . . . . . : 25.0.0.1
DHCPv6 IAID . . . . . . . . . . . : 444234208
DHCPv6 Client DUID. . . . . . . . : 00-01-00-01-14-F7-65-7D-00-25-11-39-72-D8
DNS Servers . . . . . . . . . . . : fec0:0:0:ffff::1%1
fec0:0:0:ffff::2%1
fec0:0:0:ffff::3%1
NetBIOS over Tcpip. . . . . . . . : Enabled

Tunnel adapter isatap.{5E9D1815-0E41-466B-991D-FC525202DD4E}:

Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Microsoft ISATAP Adapter
Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
DHCP Enabled. . . . . . . . . . . : No
Autoconfiguration Enabled . . . . : Yes

Tunnel adapter Local Area Connection* 9:

Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Teredo Tunneling Pseudo-Interface
Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
DHCP Enabled. . . . . . . . . . . : No
Autoconfiguration Enabled . . . . : Yes
m
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February 11, 2013 11:57:03 PM

These configs look pretty good except for one small thing. Both have the same host name, Kevin-PC. This should be unique per machine. But this wouldn't explain the “connection has timed out” problem. But it might explain the homegroups problem.
m
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February 11, 2013 11:58:12 PM

both pcs are mine, the working pc was given to my bro from me sorry if this confuses things :S
m
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l
February 12, 2013 12:03:15 AM

Ok I just changed the working pc's name
m
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February 12, 2013 12:08:12 AM

Ok I've set up a homegroup, now it works both PCs are connected to it. When I dropped files on the homegroup from the broken one, the working PC doesn't see them. I dropped a jpeg and a docx.
m
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February 12, 2013 12:13:14 AM

Go to the machine that's not working. Try flushing all your network buffers (using Win7, you'll probably have to use an elevated Administrative command prompt).

arp -d *
nbtstat -R
ipconfig /flushdns

Now reset the TCP/IP stack (follow the directions in the following article, Win7 section):

http://support.microsoft.com/kb/299357

... then reboot.

m
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l
February 12, 2013 1:09:05 AM

ok and now what?
m
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l
February 12, 2013 1:12:43 AM

I guess by that response it didn't help. LOL
m
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l
February 12, 2013 1:14:04 AM

LOL! well nothing changed the homegroup doesnt seem to share anything my pc still cannot have access to internet XD
m
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l
February 12, 2013 1:26:45 AM

But would you think that if I buy a network card it would solve this issue instead of having to go through all that time consuming and complicated stuff?
m
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l
February 12, 2013 1:30:53 AM

I have no idea if it will help since I have no idea what the problem is. We're guessing right now. But if you want to try a change in hardware, go for it.
m
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l
February 12, 2013 8:23:47 PM

Hi again,

I went to futureshop to get myself a network card, after installation everything works fine now! I guess I'll never know if a file got corrupted or anything but changing the network card worked for me !

Thx for your help and your time ! It is really appreciated!
m
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l
February 12, 2013 8:50:56 PM

Good to hear!
m
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l
!