Function Keys not working on Logitech Cordless 1500 Rechargeable Desktop Keyboard

I have few Vista computers that use Logitech Cordless 1500 Rechargeable Desktop Keyboard & Mouse pack. Some of them is having a problem of the Keyboard function keys not working. After doing lot of testing and research I found that this is caused by Registry problem.

Function keys light on the receiver is on up to the point where you have to log on to the OS. And once windows load up everything the light get turn off.

This is cause by the Logitech SetPoint program thinking that there is a Function key on/off button is physically in the Keyboard ( But there is no button for this keyboard).

To make this work properly do the following. ( O/S : Vista )

1. Open up regedit by going to Search in the Start Menu and typing regedit on it.
2. Now browse to the following location in regedit
HKEY_CURRENT_USER> SOFTWARE> LOGITECH> KHAL
3. Check to see if the value of FMode
4. If it is 0. Double click onit and Change the value to 1
5. Now Restart your computer.

Now the problem of Function keys will be fixed

How to disable the User Account Control (UAC) in Windows Vista

To be able to disable the User Account Control Follow the following steps.

1. Click on the start button
2. On search box on start menu type "MSCONFIG"
3. One the search find the application double click on it to open the system configuration window.
4. Click on the Tools tab
5. From the list of all the tools available scroll down until you find "Disable UAC" tool.
6. Click on Launch Button
7. The command prompt window will be open saying "The operation completed successfully"
8. Close the command prompt window and Restart the computer