My monitor is getting darker by the day. rigth now i can't even see some the things it ois showing on the screen. please what are the problems and solution. so also is my flash drive doesn't let me copy file into it, but keeping showing me canot copy this file (reductancy check)

Cheaper to replace than repair

http://www.newegg.com/Product/Product.aspx?Item=N82E16824254042

The same thing happened to my Sony DSC-T70 today after I dropped it. White screen with green vertical lines. Need help!

sounds like backlight is failing,contact acer and see if its under warranty.

Unfortunately that's the age old problem of matching colors between computers and printers. Your printer is probably not the problem, that's why he couldn't fix it. Even though your monitor is set to default values it doesn't mean that your colors are correct as colors can vary from monitor to monitor and the color temperature is probably too high causing the colors to look lighter than the printout. The picture on the monitor may look good to you, but it's not set right for matching printer colors. Monitors use RGB (Red, Green & Blue colors) colors and printers use CYMK (Cyan, Yellow, Magenta & Black) colors and you have to make them get the results you want. You will have to do some tweaking of your monitor's settings to get it to match the printer output. Below are some links that will help explain things better and maybe help you adjust your monitor.

http://www.colorwiki.com/wiki/How_To_Get_My_Monitor_To_Match_My_Printer

http://answers.yahoo.com/question/index;_ylt=AjWgmLYL.EGyC5z6hTuiEILty6IX;_ylv=3?qid=20090405191851AAl0xOq&show=7#profile-info-R3GCvDlKaa

http://www.hex2bit.com/products/product_mcw.asp

You will need a new monitor screen. I have had two screens go on me recently and what you describes normally happens

no! there is nothing inside that you can adjust.
if the screen i sgetting darker by the days, it is time to buy a new one.

This problem is showing when the main PCB of the monitor failed. Contact the LG service provider in your area. They will change the full package assembly or PCB. check this link to get the service center info
http://www.lgservice.com/

To even things out you need to use the controls on the monitor to lower the brightrnes. to acceptable levels. When playing a DVD there are seperate controls in the software and your graphics driver to adjust the Video Overly settings. Look for settings called gamma and brightness in the video overlay settings in the windows display properties panel. This should help even things out some. Deal is to crank down the brightness on the monitor and crank it up in the video settings in windows. It will make the DVD's brighter and rest of the time the regular screen darker.

You will need a qualified TV technician for this, as there are no user servicable parts in your set, but there are hazardous voltages present, even when the set is off & unplugged.

i dont think there is much you can do about this which wont cost a fortune