My monitor is a 943nwx syncmaster 19' it accidently fell down from a height of 1 foot after this it does not work at all What can be done about this?

If you are in Windows XP, you can use the following key combination:
CRTL + ALT + up arrow
I am not sure if this combination works in Windows 7.
Good luck.

Use your brain

You can download user manual and read all about it here: http://www.samsung.com/us/support/detail/supportPrdDetail.do?menu=SP01&prd_mdl_name=913N

These buttons are used to control the various setting of the screen, such as Brightness, Contrast, Height, Width, Pincushion, and various others.Usually one button, usually the MENU will bring up the master menu, the other buttons are Left & Right. are used to go up or down with the settings, or + & -, Repeated presses of the button(s) will advance it on to the next setting.

height is fix you cant do changes but you can move to down and upwards .

The fault maybe an inverter board fault or CCFL lamp fault.
For service, pats, and DIY info check out LCD Parts - click on this link to their WEB site : -
www.lcdparts.net

have the switching power supply checked or might need a replacement

1 MAKE SURE THE DATA CABLE IS CONNECTED TO THE CPU.
2 MAKE SURE TO TURN THE MONITOR ON.

Does the monitor plug into a card or the motherboard socket?

When your computer first boots is everything up the right way?

If so, errrr you may have to turn your monitor upside down to do this with any ease, but have a look in your video cards control panel. It may have been set to rotate the display by a hotkey accidently.

Just set it to be 0 degrees and apply.

Hope that helps =)