FN + F3 (twice)

There are a number of reasons why you may not get a wi-fi connection:

1. No connection available
2. Poor signal strength
3. Wi-fi on device not turned on
4. Faulty wi-fi driver in device
5. Using wrong wi-fi security password
6. Router has your MAC address blocked
7. Faulty wi-fi module in device

If you can give specifics on what you have tried and what the results are we may be able to narrow down the possibilities.

Turn on the Wi-Fi switch (if it has one) on the case, then use Fn+F2 or Fn+F3 to toggle the service on or off. See... http://smallbusiness.chron.com/turn-off-wifi-acer-aspire-one-48952.html
and this... http://acer.custhelp.com/app/answers/detail/a_id/512/~/how-do-i-turn-the-wireless-on-and-off-on-the-acer-aspire-one-aoa-110%3F

Install the driver if not yet installed. If installed, you need to install the Launch Manager which can be found at Acer's support website. After installation, press Fn+F3. You can now turn on or off your bluetooth (together with your Wi-Fi.

You can find a User Manual, using your Acer Laptop Model number here: http://www.acer.com/worldwide/support/

On the Aspire One D260-a .To turn on and off the wi-fi next to space bar press the fn button and press f3 and the light for the wi-fi on botton left will come on and do it again to turn off.

press Fn+F3
some acer laptop use this code to turn on-off the wifi and bluetooth

i hope this helpful
thank you for using fixya

Either: Fn+F2 or Fn+F8 or Fn+F12

There may also be a little on/off switch on the side or front of the laptop that you need to check is on.

Hi. Try pressing Fn+F3 and see if a wi-fi icon appears on the lower right-hand of your screen.

^_^

There must be a small slide switch nearby the Wi-Fi led, or a keystroke combination with Fn key and one of the F keys (it must have the apropriate wi-fi symbol)

Stelios.

Look carefully on your "Function" keys example, F1, F2, F3 to F12 that are located above your keyboard. On each function keys, there is an icon. One of those is wi-fi. Find which function key has the wi-fi icon then find key to activate those functions. It is called "Fn" key (located in the bottom of your keyboard near "Ctrl" or "Alt"). Now press and hold "Fn" + "F#" then release. This should turn on your wi-fi. On mine, I have wi-fi on "F8" so I would press "Fn" + "F8".