Couple of things:
1)You can adjust the screen brightness with the dial next to the volume dial.
2)As the machine is powering up hit the F2 key (top of keyboard 3rd key from left ... little book icon).
That'll get you to the BIOS log-in screen. Type schwasck and hit enter.
3)If you don't see any of this, then your screen may be fried.
4)Does the machine still have the DOC and does it use a hard drive?
5)The keyboard CANNOT be used with IrDA. It is slow speed infrared like a TV remote not fast infrared like an IrDA device.
If you get into the BIOS you can check the other posts in this board to walk you thru system set up.
MOOKIE - Burnin' Up The Bandwidth!