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Wireless & Ethernet LAN - Not Working?

13K views 16 replies 4 participants last post by  jenae 
#1 · (Edited)
I have an Acer Aspire 7552G laptop running Windows 7 x64 that is having problems with connecting to the internet.

I started to notice the wireless and LAN connections becoming very weak, web pages would load slower, data would take longer to download, etc. This lasted for a couple weeks. As of now, I cannot get any signal, neither wireless nor LAN.

I normally use Google Chrome but have tried to connect through multiple browsers.

I have tried updating the wireless/ethernet drivers, and I have also tried uninstalling them all together and reinstalling them. Both to no avail. I have no idea how to resolve this issue and am hoping the tech pros here can help me out!

Wireless LAN and LAN vendors are both Broadcom and the drivers can be found here: Acer Support: Downloads & Support Documents - Notebook / Aspire / Aspire 7552G


*I am connecting to internet on a university campus.
 
#2 ·
How are you measureing the stregth of the ethernet connection?

Who is your ISP ?. . What Brand and Model is the Modem and Router?


Lets take a peek at your network environment:

First:

Power Cycle everything . . Turn off the Modem, router and all pc's . . turn on the Modem and wait a few minutes for the lights to stabilize . . then turn on the router, then one pc at a time. See if you connect to the internet.

Then:

Remove all the stored wireless network profiles and search for the network again.

How to Remove Stored Wireless Network Profiles for XP, Vista, and Windows 7

Then: check your browser's settings, remove any proxy settings if foundhere's how.

Then:

with the pc connected to the router, Click on Start . . Run . . type CMD

At the > prompt type type the following command: IPCONFIG /ALL


Note that there is a space before the /ALL, but there is NOT a space after the / in the following command.

Right click in the command window and choose Select All, then hit Enter. Come back here and Paste the results in a message.

If you are on a machine with no network connection, use a floppy, USB drive, or a CD-R disk to transfer a text file with the information to allow pasting it here.

then please Download and run this Xirrus Wi-Fi Inspector, click the Networks link on the upper left and paste a screen shot of that screen here. Note that this application requires NET Framework to run. If you get an error about a missing function, download and install NET Framework.


To post a screen shot of the active window, hold the Alt key and press the PrtScn key. Open the Windows PAINT application and Paste the screen shot. You can then use PAINT to trim to suit, and save it as a JPG format file. To upload it to the forum, open the full reply window and use the Manage Attachments button to upload it here.[/COLOR
 
#3 ·
Microsoft Windows [Version 6.1.7601]
Copyright (c) 2009 Microsoft Corporation. All rights reserved.

C:\Users\New>ipconfig /all

Windows IP Configuration

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

Wireless LAN adapter Wireless Network Connection 2:

Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Microsoft Virtual WiFi Miniport Adapter
Physical Address. . . . . . . . . : 18-F4-6A-B0-82-84
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes

Wireless LAN adapter Wireless Network Connection:

Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . : ucsd.edu
Description . . . . . . . . . . . : Broadcom 802.11n Network Adapter
Physical Address. . . . . . . . . : 18-F4-6A-B0-82-84
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes

Ethernet adapter Local Area Connection:

Connection-specific DNS Suffix . : ucsd.edu
Description . . . . . . . . . . . : Broadcom NetLink (TM) Gigabit Ethernet
Physical Address. . . . . . . . . : 20-6A-8A-27-B4-24
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes
Link-local IPv6 Address . . . . . : fe80::566:5185:ac46:6e8d%11(Preferred)
IPv4 Address. . . . . . . . . . . : 172.17.207.240(Preferred)
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Lease Obtained. . . . . . . . . . : Tuesday, February 14, 2012 12:29:48 PM
Lease Expires . . . . . . . . . . : Tuesday, February 14, 2012 12:35:47 PM
Default Gateway . . . . . . . . . : 172.17.207.1
DHCP Server . . . . . . . . . . . : 132.239.1.74
DHCPv6 IAID . . . . . . . . . . . : 371223178
DHCPv6 Client DUID. . . . . . . . : 00-01-00-01-14-E0-D9-A9-18-F4-6A-B0-82-84

DNS Servers . . . . . . . . . . . : 208.67.222.222
208.67.220.220
Primary WINS Server . . . . . . . : 132.239.0.201
Secondary WINS Server . . . . . . : 132.239.0.202
NetBIOS over Tcpip. . . . . . . . : Enabled

Tunnel adapter Teredo Tunneling Pseudo-Interface:

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

Tunnel adapter isatap.ucsd.edu:

Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . : ucsd.edu
Description . . . . . . . . . . . : Microsoft ISATAP Adapter #3
Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
DHCP Enabled. . . . . . . . . . . : No
Autoconfiguration Enabled . . . . : Yes

C:\Users\New>
 

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#5 ·
I measured relative strength of the signal. Currently I cannot load any web pages on the laptop with the problem while I can connect to the same signal from any other device and it will work perfectly.

I am not sure of the ISP and brand of the modem as I am connecting to the internet provided by my university's residential life offices.



No I have not asked the university tech if they are having problems. Like I previously mentioned, the connection is not the problem because I can use it with any other device. It is only on this laptop that I cannot get signal.
 
#8 ·
You have an IP address, but is a funny one . . 172.17.207.240

Try this:

Hold the Windows key and press R, then type CMD (COMMAND for W98/WME) to open a command prompt:

Type the following commands on separate lines, following each one with the Enter key:

PING 172.17.207.1

PING 74.125.45.100

PING yahoo.com

Right click in the command window and choose Select All, then hit Enter.
Paste the results in a message here.
 
#9 ·
Microsoft Windows [Version 6.1.7601]
Copyright (c) 2009 Microsoft Corporation. All rights reserved.

C:\Users\New>Ping 172.17.207.1

Pinging 172.17.207.1 with 32 bytes of data:
Request timed out.
Request timed out.
Request timed out.
Reply from 128.54.205.1: Destination net unreachable.

Ping statistics for 172.17.207.1:
Packets: Sent = 4, Received = 1, Lost = 3 (75% loss),

C:\Users\New>Ping 74.125.45.100

Pinging 74.125.45.100 with 32 bytes of data:
Request timed out.
Request timed out.
Request timed out.
Request timed out.

Ping statistics for 74.125.45.100:
Packets: Sent = 4, Received = 0, Lost = 4 (100% loss),

C:\Users\New>Ping yahoo.com
Ping request could not find host yahoo.com. Please check the name and try again.


C:\Users\New>

C:\Users\New>
 
#10 ·
Hmmmm . . failed to ping the Gateway . . not a good sign.

What hardware or software did you install or uninstall jsut prior to having this problem?

Lets Try this:

Start, Run, CMD to open a command prompt:

In the command prompt window that opens, type type the following commands:

Note: Type only the text in bold for the following commands.

Reset TCP/IP stack to installation defaults, type: netsh interface ipv4 reset
Reset WINSOCK entries to installation defaults, type: netsh interface ipv6 reset

Reboot the machine.
 
#15 ·
Microsoft Windows [Version 6.1.7601]
Copyright (c) 2009 Microsoft Corporation. All rights reserved.

C:\Users\New>ipconfig /all

Windows IP Configuration

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

Wireless LAN adapter Wireless Network Connection 2:

Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Microsoft Virtual WiFi Miniport Adapter
Physical Address. . . . . . . . . : 18-F4-6A-B0-82-84
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes

Wireless LAN adapter Wireless Network Connection:

Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . : ucsd.edu
Description . . . . . . . . . . . : Broadcom 802.11n Network Adapter
Physical Address. . . . . . . . . : 18-F4-6A-B0-82-84
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes

Ethernet adapter Local Area Connection:

Connection-specific DNS Suffix . : ucsd.edu
Description . . . . . . . . . . . : Broadcom NetLink (TM) Gigabit Ethernet
Physical Address. . . . . . . . . : 20-6A-8A-27-B4-24
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes
Link-local IPv6 Address . . . . . : fe80::566:5185:ac46:6e8d%11(Preferred)
IPv4 Address. . . . . . . . . . . : 172.17.207.240(Preferred)
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Lease Obtained. . . . . . . . . . : Wednesday, February 15, 2012 10:28:13 AM
Lease Expires . . . . . . . . . . : Wednesday, February 15, 2012 10:46:13 AM
Default Gateway . . . . . . . . . : 172.17.207.1
DHCP Server . . . . . . . . . . . : 132.239.1.74
DHCPv6 IAID . . . . . . . . . . . : 371223178
DHCPv6 Client DUID. . . . . . . . : 00-01-00-01-14-E0-D9-A9-18-F4-6A-B0-82-84

DNS Servers . . . . . . . . . . . : 208.67.222.222
208.67.220.220
Primary WINS Server . . . . . . . : 132.239.0.201
Secondary WINS Server . . . . . . : 132.239.0.202
NetBIOS over Tcpip. . . . . . . . : Enabled

Tunnel adapter Teredo Tunneling Pseudo-Interface:

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

Tunnel adapter isatap.{EAD4C2A1-2F59-4FC0-B720-26849391C926}:

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 isatap.ucsd.edu:

Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . : ucsd.edu
Description . . . . . . . . . . . : Microsoft ISATAP Adapter #3
Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
DHCP Enabled. . . . . . . . . . . : No
Autoconfiguration Enabled . . . . : Yes

C:\Users\New>
 
#16 ·
In the elevated command prompt type ipconfig /release and press enter. the IP address should change to 0.0.0.0 now type ipconfig /flushdns and press enter. Now type ipconfig /renew. You should get a new IP address.
You can also try pinging Ucsd.edu (ex) type ping 132.239.180.101 or ping ucsd.edu.
 
#17 ·
Hi, the netsh commands have to be run from an elevated cmd prompt. Go to start, search and type:- cmd, right click on the returned cmd.exe and select "run as administrator", make sure you are disconnected from the internet, at the prompt type:- (copy paste)

Code:
netsh int ip reset && netsh winsock reset
(press enter)

Next clear your ARP cache same deal cmd as admin type:-

Code:
netsh interface ip delete arpcache
(press enter)

If prompted to restart computer do so.

Next cmd as admin at the prompt :-

Code:
netsh int tcp show global> 0 & notepad 0
(press enter)

post the notepad outcome here. Any improvment? I would also talk to the Uni IT they may have restricted you for some reason...
 
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