My keyboard will not light up on my ASUS G73 Laptop.

This issue is caused by the BIOS being changed. Here is a post about it in the ASUS forum:
This fixes the issue in this one case : '7C' replaced by 'FF' in the EEPROM

[url]http://pcaudio.org/stuff/G73JhFixKBLights.rar[/url]

make a usb boot drive, set your bios so flash drive comes first at start up, put bt.exe and fixmykb.bat to the usb key, run fixmykb.bat


Asus computers with a backlit keyboard come with the flag '7C' written in the cnfg page of the EEPROM.
It's a small sticky memory on the motherboard. Apart from the BIOS.

The flag address is cnfg DD (and not 27 as written in many forums)

It seems, again reading forums from all over the world, that not all Asus RMA centers know that !
Some replaced, the keyboard, the mother board (!), send the computer back without fixing it, but in most cases, fixed it without any explanation.

For months now, ASUS does not release a patch. A very simple app from windows could write this back to EEPROM. But here's the Asus problem : one flag in this eeprom (27) tells windows installer what version (like pro or ultimate edition) of windows to install... So may be some guys over there just dont want the BT.exe utility to be spread around.

In most cases, if you flashed the latest BIOS available, the latest ATK drivers and have your back lite keyboard not working, this fix will give the light back to you !

At last, some few users had the keyboard power ribbon unplugged. Before doing the hardware work to pull it out and risk damaging this fragile plastic stuff, try this fix.

WORKS ON G73 and U80V (just beginning the list). Brings also the light back to U80V illuminated trackpad.

despite a port on the motherboard for the back-lite option, not all motherboards actually have all the supporting hardware. Those that do, but aren't equipped originally with the backlit keyboard typically haven't installed the basic drivers to operate one.

start by opening: [control panel]>[system]>[device manager] and select 'search for new hardware'

Hi,

Here's a link where you can get it http://www.battery-notebook.co.uk/asus-G73JH-A1-battery-1739b.htm

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I assume you mean the function keys. Here they are:
F1 - SleepF2 - Toggle WiFiF3 - Keyboard backlight dimmerF4 - Keyboard backlight brighterF5 - Screen DimmerF6 - Screen BrighterF7 - Turn off displayF8 - Enable external displayF9 - Toggle touchpadF10 - MuteF11 - Volume downF12 - Volume up
Hope that helps!

1. Take the battery out of the laptop & try to turn on the laptop using power adapter only. If the computer turns on, then the battery is defective & needs to be replaced.
2. Make sure the power adapter is not defective. Test the output voltage of the power adapter using a voltmeter. Compare the voltmeter reading to the nominal value written on the adapter or the laptop.
3. Make sure the DC jack is not loose or broken. A loose DC jack will need to be re-soldered. A broken one will need to be replaced.
4. If you have another processor which is compatible with your laptop's model, try swapping processors & test to see if the laptop will work.
5. The power button could be bad.
6. The motherboard could be defective & needs to be replaced.

It sounds like the motherboard is one its way out. My laptop did the same thing. If the warranty is not ran out, send it in for repair.

dirt22man, if you didn`t solve the problem yet, press Fn+F4 . Cheers

Hi. Try to press and hold the Function(Fn) button then press the F10 button on your keyboard, that should disable or enable your laptop speakers. Hope this helps