Brother 2170W "fails to associate"

Have you tried the SecureEasySetup method of connecting your HL-2170W to your wireless network?

Basically, it involves no wires:

1) Press the wireless setup button on the back of your printer (you may need to use a pen or pointed object)

2) Press the SecureEasySetup button on your router

3) Let the two sort it out - Green Go button on printer indicates success.

A complete guide for using the SecureEasySetup for your brother model:

Brother SecureEasySetup Method

I hope this helps!

This instruction is to setup Brother Laser printer 2170W in windows 7
Turn off Windows Firewall
To reset the printer:
Turn off the printer.
Press and hold the Go Button in front, at the same time turn on the printer from the right side. You will see three lights(Error, Drum, Toner) turn on. Release the Go button. The light is not blue and is off.
Now, Press the Go button 7 times. Wait for some seconds.
The three lights will turn on and off by themselves. The printer warms up and then stops.
Connect the ethernet cable to the wireless router and the printer
in the browser type:
http://192.168.1.1
It shows the device connected and its ip address.
Close the browser and open new browser
on your internet browser type in http://(ip address that you see as device)
click on "Network configuration"
user: admin
Password: access
click on "configure interface". Change it to "Auto Switching" Click OK
You are back in "Network configuration"
click on Configure wireless
Make sure it is "Infrastructure" and the "channel" is correct.
Also "Authentization Method" should be "open system"
Choose your encryption method
type in your password in "hexadecimal format" and click "submit".
If your password is ascii change it to hexadecimal with an online converter
Follow the instructions.
Wait until it prints the papers.
When it tells you to remove the ethernet cable, Do not remove.
Wait until printing is done. Turn off the printer and remove the cable. Turn on printer.
Now Print the printer status:
click on the Go button once to wake up the printer.
Now click on the Go button 3 times. Wait! it will print 4 pages.
Look at the last page
you will see the IP address of the printer.
go to your browser and type in http://( new ip address that you see on last page)
The last step is again in the "configure wireless" to "configure TCP/IP"
choose something like 192.168.1.198 the last 3 digits should be a high number. Close browser.
Now put in the CD and install the wireless Driver only. All Done!
Turn ON Windows Firewall