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There is no standard meaning to any Fn +Fx key combinations. It depends on the manufacturer and the laptop model.
Usually the Fn key works in combination with the Function (Fn) keys F1-F12, and maybe ESC.
In my Toshiba, there is an overlaid numeric pad that can be activated by pressing Fn +F11. Once the sequence is pressed the F11 key led remains lit, and the overlay active. Pressing the F11 key restores the normal keyboard. Fn+Num Lock does not do anything.
Please check you laptop's manual to familiarize yourself with the uses of the Fn key on YOUR computer.
Most laptop keyboards have a key marked "FN" or "fn". This is just another shift key, like the shift, control, and alt keys. If the instructions say something like "Press fn+F1" then press and hold the fn key, press and release the F1 key, then release the fn key. Exactly the same type of procedure as when the instructions say something like "Press Control+P".
There may be a switch on the side of the laptop that turns the wireless on and off. Also try pressing and holding the fn key and pressing and releasing f1 or f2. The water spill may have killed the wireless card also. If you still can't get it working, then purchase an inexpensive usb wireless adapter. This will plug into an available usb port and will give you wireles capabilities. You will need to replace the keyboard as well as it was obviously damaged by the spill. Check on ebay, or contact the manufacturer for a replacement.
There's a keyboard combination to turn the touchpad on and off. It's usually the Fn key plus one of the F1-F12 keys. On mine it's Fn+F7 but that doesnt have to be the case with your laptop. Look over the F1-F12 keys and look for a rectangle logo. Dont mistake it for the toggle LCD-External Monitor key). Just try them out and see which one it is. If you mistakenly turn off your LCD just repeat the keystroke combination to turn it back on. This should be a straightforward try-fail thing. I once reinstalled everything on my old Toshiba because I mistakenly turned off the touchpad without even knowing I did so. :)
Press Fn+F1 instead of F1 alone or Fn+\F2 not only F2. Most laptops are by default Fn key activated so we always need to press it with the key combination.
If this doesn't help, there must be internal faulty/problem. Boot up the system and keep pressing F8 and go into "Advanced Boot options", if it's working, then there's no hardware, must be the Fn key.
The Fn is key is normally next to the ctrl and alt key at the bottom left of your keyboard. The Fn key is a key..just like F1 F2, etc its just Fn..if you don't see the Fn key and you see a Windows key somtime that takes the place of the Fn key..Good Luck
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I can't find any info about that laptop on the internet. If you have xp, go to start menu, control panel, network connections and see if you have a wireless internet connection in there. If not, you do not have a wireless card in your laptop. If you do have that connection, right click to enable it. Please rate, thanks!