Networking & Wireless forum

Question

low or no connectivity on connection to wireless router

by tcyw20 / June 11, 2013 1:13 AM PDT

I have a desktop connected to a TP Link wireless router - TL-WR940N model.by means of the a TL-WN727N wireless N USB Adapter.. Though the signal indicator showed strong, the Windows connector warned of low connectivity or no connectivity. I have repeatedly installed the software for the Adapter following the big sheet of installation instructions and even disabled the Ethernet card installed.on the desktop computer. What could the problem be in failing to connection by means of the Adapter? How to resolve the problem? .

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All Answers

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Answer
A few issues.
by R. Proffitt Forum moderator / June 11, 2013 1:18 AM PDT
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Answer
Re: low or no connectivity
by Kees_B Forum moderator / June 11, 2013 1:23 AM PDT

The phyical signal strength is not related to being logically connected.

The usual cause for this error is that your PC didn't get a IP-address from the router (that serves as a DHCP-server).
That can be related to a bad password, a setting that tells your PC to not ask for it or an error or setting in the router so that it's incapable of supplying the IP-address (for example, if the MAC-address of the PC is blocked).

So most likely it's some setting problem. Does some laptop or smartphone connect to the router? Does your desktop (that's a little bit clumsy to test if it isn't a laptop) connect to another wireless router.

Kees

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And ...
by Kees_B Forum moderator / June 11, 2013 7:54 AM PDT

looking at the output of ipconfig /all (from the command prompt) usually tells a lot, such as autoconfigured ip-address (169.... in stead of the usual 192...).

Kees

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low-or-no-connectivity
by tcyw20 / June 11, 2013 12:44 PM PDT
In reply to: And ...

The IP Address is 169.254,150 .240, the Subnet Mask is 255.255.0.0 - that is from the Network ConnectionDetails. Running IPCONFIG just gave a 'flash', the display won't stay or be seen!

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Re: IP-address
by Kees_B Forum moderator / June 11, 2013 5:36 PM PDT
In reply to: low-or-no-connectivity

To run a command prompt program, first run the command prompt (cmd), then run the program (by typing the name + enter). Then you'll see that the output stays on the screen and can be copied and pasted.
Running the program from the start>run box doesn't work, as you noticed, that's why I said "from the command prompt".

But an IP-address starting with 169 indeed is an autoconfig address, meaning the PC didn't manage to get an IP-address from the router or didn't ask for it.

You'll find https://www.google.com/search?q=limited+connection+169 helpful.

Kees

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