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Windows 7: Unable to change wifi password in windows 7

11 Apr 2010   #11
maliusmaximus

Windows 7
 
 

Hey Chev, here's a screen dump to show the IPCONFIG from the laptop in question.
Just to reiterate, I've tried many standard solutions.
Cheers



Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :
Ethernet adapter Local Area Connection:
Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :
Wireless LAN adapter Wireless Network Connection:
Connection-specific DNS Suffix . :
Link-local IPv6 Address . . . . . : fe80::dd7e:bafa:d872:11c8%11
Autoconfiguration IPv4 Address. . : 169.254.17.200
Subnet Mask . . . . . . . . . . . : 255.255.0.0
Default Gateway . . . . . . . . . :
Tunnel adapter 6TO4 Adapter:
Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :
Tunnel adapter isatap.{871D0CEF-D500-4D3F-8E98-7B913357724F}:
Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :
Tunnel adapter Local Area Connection* 12:
Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :
Tunnel adapter isatap.{C615793F-FC2A-45FA-98DC-E724940DB0F6}:
Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :
Tunnel adapter isatap.{2F475C86-B748-4FEA-AD7A-823A7A058913}:
Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :


My System SpecsSystem Spec
.
11 Apr 2010   #12
chev65

Windows 7 Ult, Windows 8.1 Pro,
 
 

That ipconfig is messed up to say the least, there is no default gateway so there is no way the router can add that machine to the network. It also seems to repeating the IPv6 settings which is typical when things are messed up.

Try these in order.
Clear DNS Cache: ipconfig /flushdns

Release All IP Address Connections: ipconfig /release

Renew All IP Address Connections: ipconfig /renew

If those don't work either your mac address isn't right or the network adaptor is having problems with Win 7.

Sometimes resetting winsock can have an effect on this also.
Run CMD as Admin...
netsh winsock reset catalog
netsh int ipv4 reset "c:\reset.log"
netsh int ipv6 reset "c:\reset.log"
My System SpecsSystem Spec
11 Apr 2010   #13
maliusmaximus

Windows 7
 
 

Thanks for your help Chev65. Didn't think to reset winsock. That said, I've now tried that. Everything is much the same. Refer to the bottom of this post for results. I really think this is a reg problem.
I re-checked on the router and the laptop in question is listed amongst the connected clients:

00:1B:63:CA:23:A1
00:25:86:BF:91:A1
00:26:5E:FB:4E:3B
maliuslaptop-PC 192.168.1.6 00:192:22:22:70
MYPHAM 192.168.1.9 00:21:5C:6B:C8:67


The MAc for the laptop in question is the one ending in 3B. The other 4 computers are accessing successfully (and also one computer on ethernet and one IPTV set-top box).
I'm not running any MAC spoofing software on the laptop, and the only non-standard thing that's been done recently is to upgrade the OS from Windows7 starter to Windows7 Ultimate. Apart from that it's all pretty vanilla. 6 months since initial install. No funky drivers/software installed.
Anyway, here's the updated log from the ipconfig and winsock reset (Thanks again for your help):


Wireless LAN adapter Wireless Network Connection 2:
Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :
Ethernet adapter Local Area Connection:
Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :
Wireless LAN adapter Wireless Network Connection:
Connection-specific DNS Suffix . :
Link-local IPv6 Address . . . . . : fe80::dd7e:bafa:d872:11c8%11
Autoconfiguration IPv4 Address. . : 169.254.17.200
Subnet Mask . . . . . . . . . . . : 255.255.0.0
Default Gateway . . . . . . . . . :
Tunnel adapter 6TO4 Adapter:
Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :
Tunnel adapter isatap.{2F475C86-B748-4FEA-AD7A-823A7A058913}:
Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :
Tunnel adapter Local Area Connection* 12:
My System SpecsSystem Spec
.

11 Apr 2010   #14
maliusmaximus

Windows 7
 
 

Minor breakthrough. Interestingly, resetting the modem, then disabling/re-enabling WEP from the router allows the computer to connect. Works until laptop is turned off, or client lease expires. Weird stuff.
My System SpecsSystem Spec
11 Apr 2010   #15
chev65

Windows 7 Ult, Windows 8.1 Pro,
 
 

Resetting both the router and modem sometimes works to reset the mac or what ever configuration wasn't correct but the reset doesn't seem to be saving your settings. The fact that the default gateway in your "ipconfig" still isn't showing up is going to be a problem.

It should be showing up as 192.168.1.1 for the default gateway depending on router being used "not sure which router your using", and your ipv4 address should be showing up as 192.168.x.x like the one you show first "maliuslaptop-PC 192.168.1.6" , it should not be 169.254.17.200 such as your ipconfig is showing. I'm not sure where that secondary address is coming from "maybe the modem" but it's not the right one for your router.

You might try entering the ip address manually in device manager or assigning a different IP using the router, although if DHCP is enabled all this should be taking place automatically. If not then resetting the router might fix the problem.

You mentioned upgrading from win 7 starter to Ultimate, upgrading can sometimes be problematic. If all else fails, I would go with a clean install using Win 7 Ultimate and see if it works any better that way.
My System SpecsSystem Spec
11 Apr 2010   #16
maliusmaximus

Windows 7
 
 

Thanks Chev. Clean install is not possible as the system came with Win7 Starter OEM, and I've since upgraded electronically. Do not have win7 ultimate DVD. If reinstalling it would be another case of having to installer starter, then upgrade (using the upgrade code). This is why I've been trying to seek a registry based solution, as this is where it probably lies.
In relation to the upgrade process, as far as I know, Win7 upgrades are much less problematic as it simply activates sleeping components, rather than making changes at the kernel level. As such it's still my hope I can resolve this without a reinstall (besides a reinstall would involve an upgrade anyway).
If it helps, here's a log of the wireless adapter info whilst it's working:
Wireless LAN adapter Wireless Network Connection:
Connection-specific DNS Suffix . : domain_not_set.invalid
Link-local IPv6 Address . . . . . : fe80::dd7e:bafa:d872:11c8%11
IPv4 Address. . . . . . . . . . . : 192.168.1.7
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Default Gateway . . . . . . . . . : 192.168.1.1

Thanks again for any further help
My System SpecsSystem Spec
11 Apr 2010   #17
devildog93

Windows 7 Professional
 
 

Quote   Quote: Originally Posted by chev65 View Post
Resetting both the router and modem sometimes works to reset the mac or what ever configuration wasn't correct but the reset doesn't seem to be saving your settings. The fact that the default gateway in your "ipconfig" still isn't showing up is going to be a problem.

It should be showing up as 192.168.1.1 for the default gateway depending on router being used "not sure which router your using", and your ipv4 address should be showing up as 192.168.x.x like the one you show first "maliuslaptop-PC 192.168.1.6" , it should not be 169.254.17.200 such as your ipconfig is showing. I'm not sure where that secondary address is coming from "maybe the modem" but it's not the right one for your router.

You might try entering the ip address manually in device manager or assigning a different IP using the router, although if DHCP is enabled all this should be taking place automatically. If not then resetting the router might fix the problem.

You mentioned upgrading from win 7 starter to Ultimate, upgrading can sometimes be problematic. If all else fails, I would go with a clean install using Win 7 Ultimate and see if it works any better that way.

I had a problem like this once, can't remember all the circumstances, but that ip address is a public ip from a range of public ip's that can be assigned usually when there is a failure of the router to assign an address in the proper range, probably DHCP related.


I found this:


http://forums.techguy.org/networking...xxx-x-xxx.html
My System SpecsSystem Spec
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 Unable to change wifi password in windows 7




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