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external adapter can connect to wifi but laptop can't

4K views 4 replies 2 participants last post by  darklordnd 
#1 · (Edited by Moderator)
Hi supporters,
I've been having a problem with my wifi for a month or so. I used to connect well to my wifi, but then one day my laptop just can't connect to it anymore. It says "windows was unable to connect to..." or something similar to that.
But what's strange is, I have an external wifi adapter (Tenda 802.11n, it looks like an USB flash drive). I use this adapter to connect to Wifi with the very same password, and it can connect perfectly. Signal strength is around the same level.
I tried using windows troubleshooter, didn't work. I borrowed my friend's laptop (which is very modern, and have windows 7 - mine has windows XP), but the same problem exists: the laptop can't connect, but the adapter can.
I also tried to export the wifi settings to an USB flash drive (using windows 7's function), and installed it on the laptops. Didn't work.
Now my dad is really mad at me, so please help me. Thank you very much!
Attached are the required files. I put 2 ipconfig there, the ipconfig.txt is when I use the laptop to connect, the ipconfig2.txt is when I use the adapter. The network I want to connect to is named "HaSang".
(The wifi source is my neighbor's)

Laptop

Windows IP Configuration

Host Name . . . . . . . . . . . . : NGUYENCONGMINH
Primary Dns Suffix . . . . . . . :
Node Type . . . . . . . . . . . . : Hybrid
IP Routing Enabled. . . . . . . . : No
WINS Proxy Enabled. . . . . . . . : No

Wireless LAN adapter Wireless Network Connection 3:

Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Microsoft Virtual WiFi Miniport Adapter #2
Physical Address. . . . . . . . . : 88-53-2E-75-29-35
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes

Wireless LAN adapter Wireless Network Connection 2:

Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Microsoft Virtual WiFi Miniport Adapter
Physical Address. . . . . . . . . : 88-53-2E-75-29-35
DHCP Enabled. . . . . . . . . . . : No
Autoconfiguration Enabled . . . . : Yes

Ethernet adapter Local Area Connection:

Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Realtek PCIe GBE Family Controller
Physical Address. . . . . . . . . : F0-BF-97-E0-A5-C4
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes

Wireless LAN adapter Wireless Network Connection:

Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Intel(R) Centrino(R) Advanced-N 6230
Physical Address. . . . . . . . . : 88-53-2E-75-29-34
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes

Tunnel adapter isatap.{13E0DBAC-BAFF-4E7E-8869-452390B108FF}:

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

Adaptor

Windows IP Configuration

Host Name . . . . . . . . . . . . : NGUYENCONGMINH
Primary Dns Suffix . . . . . . . :
Node Type . . . . . . . . . . . . : Hybrid
IP Routing Enabled. . . . . . . . : No
WINS Proxy Enabled. . . . . . . . : No

Wireless LAN adapter Wireless Network Connection 4:

Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : 802.11n USB Wireless LAN Card
Physical Address. . . . . . . . . : C8-3A-35-CA-D9-3B
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes
Link-local IPv6 Address . . . . . : fe80::14f7:31be:88e9:265d%19(Preferred)
IPv4 Address. . . . . . . . . . . : 192.168.2.101(Preferred)
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Lease Obtained. . . . . . . . . . : Friday, May 04, 2012 6:32:12 PM
Lease Expires . . . . . . . . . . : Friday, May 04, 2012 8:32:12 PM
Default Gateway . . . . . . . . . : 192.168.2.1
DHCP Server . . . . . . . . . . . : 192.168.2.1
DNS Servers . . . . . . . . . . . : 192.168.2.1
NetBIOS over Tcpip. . . . . . . . : Enabled

Wireless LAN adapter Wireless Network Connection 3:

Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Microsoft Virtual WiFi Miniport Adapter #2
Physical Address. . . . . . . . . : 88-53-2E-75-29-35
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes

Wireless LAN adapter Wireless Network Connection 2:

Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Microsoft Virtual WiFi Miniport Adapter
Physical Address. . . . . . . . . : 88-53-2E-75-29-35
DHCP Enabled. . . . . . . . . . . : No
Autoconfiguration Enabled . . . . : Yes

Ethernet adapter Local Area Connection:

Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Realtek PCIe GBE Family Controller
Physical Address. . . . . . . . . : F0-BF-97-E0-A5-C4
 

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