My on/off button doesn't work anymore. I want to open the monitor, but it won't open. I have no idea how to open the monitor, I already unscrewed it, but it still won't open. How to open it, so you can get to the inside?

Just push harder.

standing up or laying down?
when standing they sometimes stick, lay it down and if it still won't open then press down on the casing just above the eject button.
if that doesn't work then the unit will have to be opened, the dvd drive taken apart and completely cleaned.

try to check your power cable if it is plug in.

The cruise control issue is a common problem. The switch that is behind the steering wheel tends to wear out and the whole stalk will have to be replaced. I had the same problem with mine. It would work intermittently and over time it stopped working all together. I replaced the stalk and it was fixed

I assume you have already try this monitor with other PC, just to be sure before opening up the case.
Most common failure in the LCD monitors are bad capacitors (bulging top/seal or leaking) in the power supply, failed inverter circuits (blown fuse, shorted transistors, shorted/open transformers), bad lamps (poor solder connections or worn out lamps). You will need to open it up and inspect the inside, see example of failed monitors to get some ideas what goes wrong: http://s807.photobucket.com/home/budm/allalbums
Post back what you see inside so we can guide you further.
http://www.badcaps.net
http://en.wikipedia.org/wiki/Capacitor_plague

I used two thin putty knives this morning to open the monitor case. First, unscrew the four screws at the back. Then insert a putty knife into the small crack between the front bezel and the monitor shell. Carefully work you way around and wiggle the putty knives. Note that the front buttons are attached to the thin black edge at the front, and there's a thin cable at the bottom. Don't damage that. You can take off the back shell though.

Please try to turn the monitor off. Hold down the Menu button while the monitor is turned off, then press the Power button again to turn the monitor back on. This should unlock your OSD menu from your screen. regards

Hi, sorry for the delay as i was on a journey
for the cable testing, you need a multimeter for testing the continuity, a star screw driver for opening the monitor cabinet, and a soldering iron.
First open the cabinet of the monitor. See the cable end connected to the board. Loosen the circuit board by unscrewing.
Connect and check each wire of the cable by touching multimeter probs at both the ends.
hope this may give an idea for solving your problem
thank you

Just managed to open a FP17G+ monitor. My hope is that FP17G is similar and that this comes in handy.

There are 5 screws holding the casing together. Four are in the corners (black screws on my monitor). The 5th is right under the monitor stand (silver screw on my monitor.

To open the monitor, I had to:

1) Remove the monitor stand. To do so, you need to take out the two screws at the point where the base connects to the monitor (right above the pivot point) and slide out the monitor stand. THis should give you enough space to take out the 5th screw.

2) Unscrew the five remaining screws on the back of the monitor.

3) At the bottom edge of the monitor, there are two gaps between the front and back plastic panels of the monitor. You can place a wide screwdriver in this gap and gently pry apart the front and back of the monitor. Continue around the edge and the monitor will be open.

Best of luck... If you figure out what is wrong inside, let us know (I am trying to fix the same problem).

your Mnotitor Panel Switches gone bad replace all the switches and your monitor will be ok.
Ashok