Wireless LAN disconnects frequently, problems with "DNS server"

Hello,

My desktop PC loses connection to the Internet frequently. It usually follows a pattern wherein I have Internet for about 1 min, then I lose access to the Internet for 3 - 5 min before the Internet magically returns, only to fail again shortly after. It is also worth noting that I don't lose connection to the wireless network itself, only access to the Internet.

When my Internet fails Chrome returns the message "DNS probe failed, no internet" or a similar message also referring to the DNS server, while the build in Windows troubleshoot gives one of several error messages including "Your braodband modem is experiencing connectivity issues" (despite the W-LAN working fine on all other devices) and another error message about the DNS server.

Following a guide on the Internet I have tried disabling the Miniport adapter, but it didn't resolve the issue.


I am using a Fritz Box (not sure about the exact model) and a Fritz Wireless LAN stick.


I'll edit this post with the ipconfig output as soon as I can get my Internet to work on my desktop long enough to do so.


Edit: Here's the ipconfig output:

Windows IP Configuration

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

Wireless LAN adapter Wireless Network Connection 3:

Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Microsoft Virtual WiFi Miniport Adapter
Physical Address. . . . . . . . . : 24-65-11-42-71-33
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes

Wireless LAN adapter Wireless Network Connection 2:

Connection-specific DNS Suffix . : fritz.box
Description . . . . . . . . . . . : FRITZ!WLAN USB Stick N v2
Physical Address. . . . . . . . . : 24-65-11-42-71-32
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes
Link-local IPv6 Address . . . . . : fe80::b1d0:b1b9:5f8d:c8ab%14(Preferred)
IPv4 Address. . . . . . . . . . . : 192.168.178.64(Preferred)
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Lease Obtained. . . . . . . . . . : 03 August 2015 10:13:13
Lease Expires . . . . . . . . . . : 13 August 2015 10:19:20
Default Gateway . . . . . . . . . : 192.168.178.1
DHCP Server . . . . . . . . . . . : 192.168.178.1
DHCPv6 IAID . . . . . . . . . . . : 237266193
DHCPv6 Client DUID. . . . . . . . : 00-01-00-01-1B-96-C2-57-50-E5-49-36-D5-8A
DNS Servers . . . . . . . . . . . : 192.168.178.1
NetBIOS over Tcpip. . . . . . . . : Enabled

Ethernet adapter Local Area Connection:

Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Realtek PCIe GBE Family Controller
Physical Address. . . . . . . . . : 50-E5-49-36-D5-8A
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes

Tunnel adapter isatap.{159D2175-0095-4B37-A26D-6CC3E802ED9B}:

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.fritz.box:

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

Create a manual System Restore point - System Restore
Run in cmd:

Code:

netsh winsock reset

Sorry for the slow reply I have been quite swamped in work recently.


Unfortunately however your suggestion didn't help solve the problem... (But thanks anyway!)

Ok, try:
- In Device Manager uninstall the wireless adapter and tick to remove/uninstall drivers too.
- Remove the stick
- Uninstall any FRITZ software
- Restart and run DriveCleanup as admin - Drive Tools for Windows
- Restart PC
- Scan files and registry with CCleaner free
- Restart PC
- Install the wireless as described in its manual (sometimes you need to plug the wireless after software installed and it will ask you to plug it in)