The screen is all black i think someone dimmed the screen

Hope this helps.... Your monitor has an inverter issue. You know it's an inverter problem when:
1. Your monitor starts normally and displays the startup/desktop screen for a while.
2. Then it suddenly goes off, leaving a blank (black) screen or a very dim display.

To fix this black screen problem, change the inverter board (based on your monitor brand). Source(s): http://lcdmonitorrepair.annics.com

It may be a problem with your light behind the screen or the driver's that produce the energy to light it up. Sounds like a hardware problem to me.

in the control panel power options chnage the setting to never for sleep options and dim display options

sounds like your backlight inverter or lamp has failed. It is worth fixing if you can find someone to do it for a reasonable price. It isn't something I would recommend trying yourself unless you have laptop repair experience. If you just want to purchase a new laptop, you can put your old one on Ebay or Craigslist. I can assure you someone will buy it as is.

Replacing it is not too much trouble for an experienced cell phone technician. But, it's not for anyone who doesn't like to tinker with small things. Here's a video demonstrating the entire process: http://www.youtube.com/watch?v=QJpHHs9QM5U.

Make sure that in the settings that your TV isn't setup to auto dim. I remember I had a similar problem. I think when ever a light would turn on or someone would walk near the TV it would get dim. It was really annoying. Check your settings. Good luck

SOMEONE TURNED THE CONTRAST BUTTON ON YOUR DISPLAY, YOU JUST NEED TO READJUST BY PRESSING AND TURNING TO DESIRED CONTRAST

I have exact same problem but mine happened to 2 of my x2gen monitors at the same time,really strange.
One was purchased 01/07 and the second 04/07
Took my PC in, no problems
Took one of the x2gen in,was told monitor is bad
How could both monitors go bad at the same time???????

www.digitalcamrepair.com if you need further assistance.85.00 repair.

Hey, sounds like the back lights in the laptop are faulty, if it is backlights you should be able to see the whole picture but will be hard to see and dull.

Heres one website that sells them, aint sure if its the cheapest place, last time i think i was about £80 for them. which is alot of money but depends on the laptop make etc.

http://www.laptoprepair.co.uk/laptop-backlight-problem-dim-screen.html

Have a nice Christmas when it comes,,
John