@poseid0n you can always toggle the backlight & the other features by pressing the F5 or F4 (some models) key on the keyboard to turn the light on or off. It might be necessary to press the fn (function) key at the same time.
If the backlight icon is not on the F5 key, look for the backlit keyboard key on the row of function keys.
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(By the end of this article all the issues should be resolved)
If the above doesn't work, please reinstall the keyboard drivers from the device manager and then, try again.
Look for the Fn lock key, and unlock the same, to check if that helps, as well.
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