Wireless and USB keyboard dosen´t work during boot

Question

After rebooting my Imac the keyboard dosen´t respond in the boot phase. I get this famous blinking question mark at booting so I have to press C or D on the keyboard for options. The problem is that neither the wireless keyboard or my new USB keyboard work. I have also installed the firmware password utility, but it dosen´t get that far to ask for password, just this blinking question mark at startup. Does someone have an idea how to make the computer respond to the keyboard commands????

Answer 1

Apple doc for you:
Apple Wireless Keyboard and Mouse: About the Bluetooth Firmware Update
* Last Modified on: December 09, 2003
* Article: 86493
The Apple Wireless Keyboard and Mouse software CD include a firmware updater. You can use it to update the firmware of your computer's built-in Bluetooth hardware or a D-Link DBT-120 (rev B2 or later) USB to Bluetooth adapter.
About the Bluetooth Firmware Update
For optimal performance of the Apple Wireless Keyboard and Mouse, you should install the Bluetooth Firmware Update. The firmware update can improve the performance of the mouse and keyboard by decreasing connection and tracking issues.
Installing the firmware update lets you use keys on the Apple Wireless Keyboard during the startup process. This is important if you need to start up the computer from a CD, in target disk mode, or reset parameter RAM (PRAM), for example.
It also lets you wake the computer from sleep by clicking the Apple Wireless Mouse or pressing a key on the Apple Wireless Keyboard.
The firmware updater is available on the Apple Wireless Keyboard and Mouse software CD. It is designed to update the built-in Bluetooth hardware of some Macintosh computers. To find out which computers have this hardware, see technical document 86207, "Bluetooth: Macintosh Computers With Built-In Bluetooth". You can also use it to update the D-Link DBT-120 USB Bluetooth adapter (rev B2 or later).
If you don't have an Apple Wireless Mouse or Apple Wireless Keyboard, you don't need to install this update.
Important: This updater does not add these features to other Bluetooth devices, including earlier revisions of the D-Link adapter and other USB Bluetooth adapters.
Installing the Bluetooth Firmware Update
1. Install the keyboard and mouse software, which includes Apple Bluetooth 1.3 software. It's available on the Apple Wireless Keyboard and Mouse software CD. Double-click the file named KeyboardAndMouse.pkg.
2. If you have a D-Link DBT-120 USB Bluetooth adapter (rev B2 or later), make sure it is plugged into one of the computer's USB ports and not a port on a keyboard, display, or hub.
3. Open the firmware updater from the install disc. Follow the instructions that appear on the screen.
Important: Information about products not manufactured by Apple is provided for information purposes only, and does not constitute Apple's recommendation or endorsement. Please contact the vendor for additional information.
Document 17159, "Locating Vendor Information" can help you search for a particular vendor's address and phone number.