Hi,
Eee pc 1201n win7 32,

since i installed following updates
BIOS firmware Version: 0325
Realtek HD Audio Version: R2.48
nVidia ION Version: 197.16
Synaptics Touchpad Version: 15.0.13
Realtek WiFi RTL8191SE Version: 2013.0.0309.2010 (this one from windows update)

some Fn keys no more work:

Fn F1 sleep Yes
Fn F2 Wifi No
Fn F5 decrease screen brightness Yes
Fn Fn F6 increase screen brightness Yes
Fn F7 disables screen Yes
Fn F8 switches display No
Fn F9 ? unknown
Fn F10 mutes sound No
Fn F11 decreases sound No
Fn F12 increases sound No
Fn Space switch  Engine modes No
Fn  V No
Fn C ? unknown
Fn  arrows Yes
Fn NumLK Yes
=>i did tests with with NumLK set or not (Fn NumLK works fine)

i don't know which one of updates (Asus ?, Windows ?, me ?) did that.

Please, how could these problem be fixed ?

ps: if i get a dvd reader (usb), may i restore the whole as factory delivery, and how ?

thanks for your answer,
i got latest  Hotkey Utility (v1.15), KB Filter (1.0.0.3.32) and Super Hybrid Engine (2.10) from Asus
and re-installed.
but no good news: same problem with lack of same Fn keys,

i find out that Fn F9 is about touchpad and  neither Fn F9 nor upper left button  work

pffiou i'm a bit annoyed

Author: Nikita Posted: 5/14/2010 12:18:00 AM Well obviously you can find your solution in the last resort: Doing a System Restore with the ASUS Restore DVD. Go into the BIOS (hitting F2 during boot) and disable BootBooster and Quiet Boot. F10 & ENTER to save & exit. Have the ODD connected to your Eee and boot from it (hitting ESC during boot will start Boot Device Manager, choose your ODD) with the ASUS Restore DVD in it. Follow the directions on screen to do a Full Restore, returning your Eee to Factory Default. This will erase all data on your entire HDD so back-up your personal files first.

thanks for your kindly help,
i keep your solution for the future: System restore may be needed another time ...

from eeeuser forum, someone asks me if "Did you uninstall the old Fn key driver first?"
i miss that point
uninstall program named Hotkey service before installing new one

Rhaa, i am so glad, now every keys are working
many thanks to you and to this helpful forum

i'm happy