Wireless Lan will not turn on? The switch is on but the light does not turn on and my wireless connection does not work?

Hi, assuming your laptop is switched on.
Above the keyboard on the right side are the three 'Easy buttons'. The one on the left is for the wireless function.

Push this button to activate or deactivate the Wireless LAN. When you activate the wireless LAN function, it will search for a wireless LAN signal automatically (assuming you have the wireless LAN driver installed). Just below the screen on the right side is the Status LED Panel, which show six icons, each with its own LED. The first one on the left indicates Wireless LAN status. When the LED is displaying a green light, it indicates that the system is accessing data from, or retrieving data by wireless LAN. So whenever you press the Easy button, you should see the green status light come on or go off. To repeat, if the light is not on, you need to press the Wireless LAN 'Easy Button'. NOTE! If you can't get the button to come on, you will need to re-install the Wireless LAN driver.

Try this -

The wireless feature (Wireless LAN) on an Acer notebook allows you to connect to available networks. This convenience allows you to use the Internet with network cables, modems or network installation. Acer laptops come with a wireless switch to turn the wireless feature on or off. Once you enable the wireless feature, your Acer notebook can connect to wireless networks within range.

Instructions:
1.Locate the Wireless LAN switch located on the front of your Acer Notebook. Move the switch to the right to turn on Wireless connections.

2.Right-click the network icon located on the system tray next to the clock. You should see a list of available wireless networks.

3.Select the network you want to connect to and click "Connect."

Try rebooting both the modem and the router. It could be that the modem didn't pick up it's ip number when the internet went down. Then try pluggint you computer directly into the modem first to make sure it is setup and working properly. Then plug in the router (to the modem) and the PC plugged in directly to the router and check.

Once you have it connecting at that point then check the wireless settings on both the router and the pc. Then enable the wireless on the pc, unplug the LAN and switch to wireless network on the pc and see if it won't work.

If it works plugged in on the LAN but then not on the wireless then either your configuration isn't correct (ie wrong gateway ip number...gateway should be the same ip number as the router...ie 192.168.***.***) or perhaps the wireless part of the router died. It is possible for the wireless to die and the LAN (hard wired connection) to still work.

I may not understand you on this because the 5420-5687 notebook should have come with a wireless connection.

Does your "Modem" have both wireless and a hard wired LAN " For instance my "Modem" came only with a hard wire LAN" and no wireless transmitter. I needed to buy a "Wireless Router" to tramsit between the "Modem" and then wireless on my ACER 5420-5687.

If the "Modem" had both the hard wired Lan and a Wireless transmitter it should be able to go directly without the "Wireless Router". If that is true you should see the amber flashing light, on the last in the group of 4 below your touchpad. If it is not flashing as I said above, it is either not sending/receiving or likely not turned on. The on/off switch is alternately turned on/off by sliding the switch below the light to the right.

Hope it helps. I tend to get a little too wordy.

Rocky

INSTALLING THE WIRELESS LAN DEVICE DRIVER
Please follow the procedures below for installing the Mini PCI Adapter driver:
Installing Wireless LAN driver for Windows XP
1. Click the Start button and then click Run. The Run dialog box appears.
2. Click Browse button and specify the directory as "E:\Drivers\Winxp\Wireless LAN\setup.exe"
3. Click "OK" to implement the setup program to install this driver.
4. Click "Next" twice to continue the installation.
INSTALLING THE LAN DEVICE DRIVER
• Wireless LAN Access When LED turns on indicates that the wireless LAN module is activated. When LED lights off, it indicates that the function is disabled
MUST BE A SOFTWARE ACTIVATED SWITCH

They issue is due to the corrupted SmartWi Connection Utility Software in the Computer.

You will need to re-install the Wireless LAN Driver, Updates, and the SmartWi Connection Utilities in the Computer to fix the issue with the Wireless.

You can download the Wireless LAN Driver, Updates and the SmartWi Connection Utility from Sony Support Site.

Below are the links.

Wireless LAN Driver

Wireless LAN Driver Update 1

Wireless LAN Driver Update 2

1. Please download and save each file on the Desktop.
2. After that double click on the Original Wireless LAN Driver to begin the installation.
3. Please follow the onscreen instructions to complete the installation.
4. After that, restart the Computer for the settings to take the effect.
5. After restarting the Computer, please install the Updates.
6. Make sure that you restart the Computer after each installation.
7. Then, please re-install the "SmartWi Connection Utility in the Computer.

You can download the SmartWi Connection Utility from here.

1. Download and install the SmartWi Connection Utility in the Computer.
2. after the installation, please turn ON the Wireless Adapter using the SmartWi Connection Utility.
3. Please click "Start", "All Programs" and SmartWi Connection Utility to open the Program and turn ON the Wireless Adapter.
4. After that, please re-configure the Wireless Network connection in the Computer.
5. This should fix the issue with the Wireless Network connection.
   

If it i not fixed i encounted a similar problem. My wireless was on but there was no orange light. I then went to windows mobility center and clicked on the wireless part. then i realized that it was switched off. I hope this has helped you.

see the operating instruction manual here :

http://dl.owneriq.net/d/d94ab07b-788b-41ca-8def-00135155738c.pdf

or read below :

For instructions on settings for wireless LAN and cautions during use, select [start]-
[Reference Manual], and refer to "Wireless LAN".
Before using a wireless LAN, turn the wireless LAN on using the following method (at
the time of purchase, the wireless LAN is set to [Off]).
1 Double-click on the taskbar.
2 Select your wireless LAN adaptor and select [General].
3 Select [On] for [Switch radio].
4 Select [OK].
The icon will turn to or ��

most of the times in your right lower corner there is an icon that looks like two arrows pointing diffrent dirrection....the name of this one is vaio smart utility..let enabled the wlan box and then try to connect it