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Windows 7 笔记本电脑经常丢失互联网连接，但不会丢失 wifi

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Windows 7 笔记本电脑经常丢失互联网连接，但不会丢失 wifi

我有一台 Windows 7 笔记本电脑（如果这有区别的话，是东芝的），通过 WiFi 连接到我的 ISP 路由器，一切都是自动设置的（IP 和 DNS，DHCP 已启用）。大多数时候，它工作正常：

在此处输入图片描述

然而，时不时地，我会失去互联网连接，但不会失去与 WiFi 路由器的连接：

在此处输入图片描述

这是我迄今为止尝试过但无济于事的方法：

Microsoft Windows [Version 6.1.7601]
Copyright (c) 2009 Microsoft Corporation.  All rights reserved.

C:\>ipconfig /all

Windows IP Configuration

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

Wireless LAN adapter Wireless Network Connection 2:

   Media State . . . . . . . . . . . : Media disconnected
   Connection-specific DNS Suffix  . :
   Description . . . . . . . . . . . : Microsoft Virtual WiFi Miniport Adapter
   Physical Address. . . . . . . . . : 2C-D0-5A-C6-E7-5B
   DHCP Enabled. . . . . . . . . . . : Yes
   Autoconfiguration Enabled . . . . : Yes

Ethernet adapter Local Area Connection 2:

   Media State . . . . . . . . . . . : Media disconnected
   Connection-specific DNS Suffix  . :
   Description . . . . . . . . . . . : TAP-Win32 Adapter V9
   Physical Address. . . . . . . . . : 00-FF-F5-A1-81-72
   DHCP Enabled. . . . . . . . . . . : Yes
   Autoconfiguration Enabled . . . . : Yes

Wireless LAN adapter Wireless Network Connection:

   Connection-specific DNS Suffix  . :
   Description . . . . . . . . . . . : Realtek RTL8723AE Wireless LAN 802.11n PC
I-E NIC
   Physical Address. . . . . . . . . : 2C-D0-5A-C6-E7-5B
   DHCP Enabled. . . . . . . . . . . : Yes
   Autoconfiguration Enabled . . . . : Yes
   Link-local IPv6 Address . . . . . : fe80::9d35:bacc:befd:ab62%14(Preferred)
   Autoconfiguration IPv4 Address. . : 169.254.171.98(Preferred)
   Subnet Mask . . . . . . . . . . . : 255.255.0.0
   Default Gateway . . . . . . . . . :
   DHCPv6 IAID . . . . . . . . . . . : 455921754
   DHCPv6 Client DUID. . . . . . . . : 00-01-00-01-18-ED-28-B9-7C-05-07-32-6B-15

   DNS Servers . . . . . . . . . . . : fd3c:d8a7:f41f:0:c23e:fff:fe24:1154
   NetBIOS over Tcpip. . . . . . . . : Enabled

Ethernet adapter Local Area Connection:

   Media State . . . . . . . . . . . : Media disconnected
   Connection-specific DNS Suffix  . : OQCF09.com
   Description . . . . . . . . . . . : Realtek PCIe GBE Family Controller
   Physical Address. . . . . . . . . : 7C-05-07-32-6B-15
   DHCP Enabled. . . . . . . . . . . : Yes
   Autoconfiguration Enabled . . . . : Yes

Tunnel adapter isatap.{5849E7F7-6522-4F47-99BB-5E9FD0048B07}:

   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 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.{F5A18172-F7A6-4991-99FA-61112AF08491}:

   Media State . . . . . . . . . . . : Media disconnected
   Connection-specific DNS Suffix  . :
   Description . . . . . . . . . . . : Microsoft ISATAP Adapter #2
   Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
   DHCP Enabled. . . . . . . . . . . : No
   Autoconfiguration Enabled . . . . : Yes


   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:

   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.{F5A18172-F7A6-4991-99FA-61112AF08491}:

   Media State . . . . . . . . . . . : Media disconnected
   Connection-specific DNS Suffix  . :
   Description . . . . . . . . . . . : Microsoft ISATAP Adapter #2
   Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
   DHCP Enabled. . . . . . . . . . . : No
   Autoconfiguration Enabled . . . . : Yes


C:\>ipconfig /release

Windows IP Configuration

No operation can be performed on Wireless Network Connection 2 while it has its
media disconnected.
No operation can be performed on Local Area Connection 2 while it has its media
disconnected.
No operation can be performed on Local Area Connection while it has its media di
sconnected.

Wireless LAN adapter Wireless Network Connection 2:

   Media State . . . . . . . . . . . : Media disconnected
   Connection-specific DNS Suffix  . :

Ethernet adapter Local Area Connection 2:

   Media State . . . . . . . . . . . : Media disconnected
   Connection-specific DNS Suffix  . :

Wireless LAN adapter Wireless Network Connection:

   Connection-specific DNS Suffix  . :
   Link-local IPv6 Address . . . . . : fe80::9d35:bacc:befd:ab62%14
   Autoconfiguration IPv4 Address. . : 169.254.171.98
   Subnet Mask . . . . . . . . . . . : 255.255.0.0
   Default Gateway . . . . . . . . . :

Ethernet adapter Local Area Connection:

   Media State . . . . . . . . . . . : Media disconnected
   Connection-specific DNS Suffix  . : OQCF09.com

Tunnel adapter isatap.{5849E7F7-6522-4F47-99BB-5E9FD0048B07}:

   Media State . . . . . . . . . . . : Media disconnected
   Connection-specific DNS Suffix  . :

Tunnel adapter Teredo Tunneling Pseudo-Interface:

   Media State . . . . . . . . . . . : Media disconnected
   Connection-specific DNS Suffix  . :

Tunnel adapter isatap.{F5A18172-F7A6-4991-99FA-61112AF08491}:

   Media State . . . . . . . . . . . : Media disconnected
   Connection-specific DNS Suffix  . :

C:\>ipconfig /renew

Windows IP Configuration

No operation can be performed on Wireless Network Connection 2 while it has its
media disconnected.
No operation can be performed on Local Area Connection 2 while it has its media
disconnected.

C:\>ipconfig /release6

Windows IP Configuration

No operation can be performed on Wireless Network Connection 2 while it has its
media disconnected.
No operation can be performed on Local Area Connection 2 while it has its media
disconnected.
No operation can be performed on Local Area Connection while it has its media di
sconnected.
An error occurred while releasing interface Loopback Pseudo-Interface 1 : The sy
stem cannot find the file specified.

No operation can be performed on isatap.{5849E7F7-6522-4F47-99BB-5E9FD0048B07} w
hile it has its media disconnected.
No operation can be performed on Teredo Tunneling Pseudo-Interface while it has
its media disconnected.
No operation can be performed on isatap.{F5A18172-F7A6-4991-99FA-61112AF08491} w
hile it has its media disconnected.

Wireless LAN adapter Wireless Network Connection 2:

   Media State . . . . . . . . . . . : Media disconnected
   Connection-specific DNS Suffix  . :

Ethernet adapter Local Area Connection 2:

   Media State . . . . . . . . . . . : Media disconnected
   Connection-specific DNS Suffix  . :

Wireless LAN adapter Wireless Network Connection:

   Connection-specific DNS Suffix  . :
   Link-local IPv6 Address . . . . . : fe80::9d35:bacc:befd:ab62%14
   Autoconfiguration IPv4 Address. . : 169.254.171.98
   Subnet Mask . . . . . . . . . . . : 255.255.0.0
   Default Gateway . . . . . . . . . :

Ethernet adapter Local Area Connection:

   Media State . . . . . . . . . . . : Media disconnected
   Connection-specific DNS Suffix  . : OQCF09.com

Tunnel adapter isatap.{5849E7F7-6522-4F47-99BB-5E9FD0048B07}:

   Media State . . . . . . . . . . . : Media disconnected
   Connection-specific DNS Suffix  . :

Tunnel adapter Teredo Tunneling Pseudo-Interface:

   Media State . . . . . . . . . . . : Media disconnected
   Connection-specific DNS Suffix  . :

Tunnel adapter isatap.{F5A18172-F7A6-4991-99FA-61112AF08491}:

   Media State . . . . . . . . . . . : Media disconnected
   Connection-specific DNS Suffix  . :

C:\>ipconfig /renew6

Windows IP Configuration

No operation can be performed on Wireless Network Connection 2 while it has its
media disconnected.
No operation can be performed on Local Area Connection 2 while it has its media
disconnected.
^C
C:\>ipconfig /flushdns

Windows IP Configuration

Successfully flushed the DNS Resolver Cache.

C:\>ipconfig /registerdns

Windows IP Configuration

Registration of the DNS resource records for all adapters of this computer has b
een initiated. Any errors will be reported in the Event Viewer in 15 minutes.

还有其他建议吗？正如我所说，这是一个间歇性问题，到目前为止我发现的唯一解决方案是重新启动。

答案1

这一问题可能有很多原因。

从你的 ipconfig /all 我可以看到你获得了一个 IP 地址：

169.254.171.98

这通常意味着自动私有 IP 地址 (APIPA)

默认情况下，当您将计算机连接到网络设备时，您的计算机设置为从 DHCP 服务器获取 IP 设置。如果您的计算机无法找到 DHCP 服务器或您的计算机无法启动 DHCP 客户端，则 APIPA 服务将为自己分配一个 169.xxx IP 地址。

来源：http://www.1selfcare.com/win/169ipw/

我建议首先尝试更新您的无线适配器驱动程序。确保它们与您使用的 Windows 7 版本兼容。它们可以在这里找到：http://www.toshiba.co.uk/support/drivers/laptops/

验证并更新这些内容后，运行一段时间，看看错误是否再次出现。

尝试使用移动设备或其他设备，看看是否遇到同样的问题？如果移动设备或其他笔记本电脑等其他设备没有出现此问题，则说明该问题出在您的东芝设备上。如果出现此问题，则问题可能出在您的路由器和 DHCP 上。

如果错误仍然发生，请尝试为您的东芝笔记本电脑配置静态 IP 地址。请确保您使用连接并正常工作时所拥有的地址范围等。然后看看是否有效。

否则，请尝试登录路由器并检查 DHCP 设置，在更改任何设置之前记下它们。记下后，验证并确保它们正确无误。类似以下内容应该是正确的：

  • IP 地址池 192.168.1.100 至 192.168.1.200
  • 网关-应该是它自己的地址（路由器地址）
  • 子网 - 默认情况下，如果大于 255.255.255.0，则其网络地址应该正确。

希望有帮助

答案2

这种令人讨厌的“间歇性错误”也“间歇性”地发生在我身上。我的解决办法是：让 Windows 网络中心“解决问题”，直到它重置我的 WIFI 适配器。到目前为止，这总能解决问题，尽管是“间歇性”的，而不是永久的。不管怎样，只是想让你知道你并不是唯一一个。

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