Computer failure my monitor doesn't work and i don't know where is the problem

Make sure the VGA cable is properly inserted to your pc and monitor

Are you connecting 2 monitor to PC?

If it worked before and suddenly doesn't work now it could be a bad cable. kinks in the able can be a problem but also when you plug-in the cable be careful because damaging the cable end or the the cable port is easier than you may think.. first replace the cable with one that you know works on another unit ..if that doesn't work examine the ends carefully for anything out of the ordinary.. get a technician to take a look if something seems strange with the cable end or the port..DVI cables come in several flavors make sure your using the right one and don't force the cable in that could make matters worst and more expensive....good luck..!

A component inside the monitor has failed - hardware failure, the monitor will have to be opened and tested to identify it.
The fact that the light appears on the screen shows the fact that the power source and the inverter are functioning - the failure is located in the mainboard. Because the status light doesn't changes color it means that the processor of the monitor is no longer loading the firmware - the damage is too great to be repaired. The board will have to be replaced and that will be expensive: $110 for a new board + the shipping to your location. If you don't have at least a basic experience in repairing electronics a visit to repair shop will cost you another $100.
In my opinion this monitor is not worth this much money: for $200 you can buy a bigger and better new one.

Hi

The supply would be 12v DC 1000mA you can even go little more in amperes like 1500mA also not a problem.

DO RATE MY SOLUTION

I would try this monitor with another PC first to verify that it is not PC problem.
Most common failures in the monitors are due to bad caps in the power supply/inverter board, we want to find out first if it is the monitor or the PC problem.
See examples of failed ACER due to bad caps here:
http://s807.photobucket.com/albums/yy352/budm/ACER/

Basic LCD monitor and TV troubleshooting guide:
http://www.fixya.com/support/r6150077-basic_lcd_monitors_troubleshooting
http://www.fixya.com/support/r5093881-lcd_flat_panel_tv_troubleshooting_guide
http://www.fixya.com/support/r7406380-tv_training_manuals
Failed TV and Monitors pictures: http://s807.photobucket.com/albums/yy352/budm/

Learn about bad caps: http://en.wikipedia.org/wiki/Capacitor_plague

Capacitors kit: http://lcdalternatives.auctivacommerce.com/ he can make you a set of caps for you.
Or www.digikey.com just make sure to use caps with low ESR, 105c, high ripple current, long life rating such as PANASONIC FM or FC series.

Sounds like you changed the orientation of your display settings from landscape to portrait.
In Windows 7 you can go to the control panel, choose display and click "Change Display Settings" on the left side.

From there choose the "Orientation" dropdown and change to your desired setting (most likely landscape)

Good luck

A change of monitor will not affect your printer in any way.

The fact that you can see a faint picture indicates that the monitor is working but the backlight circuit has a problem. The typical failures are blown transistors or bad capacitors. This can be troubleshot if you know how to unsolder and check the components with a meter. Don't know how technical you are, but if you are not, you could take to to an electronic repair service to fix. Hope this helps you.

Hi Snandy, I absolutely despise monitor and computer sleep or hibernation modes. Before I started routinely disabling this on all the computers I supported my users were always having problems no matter how computer literate they were. I know this sounds simplistic and you may have already done it but have you just unplugged the monitor? If that doesn?t work maybe the PC itself has gone to sleep as well. Try moving the mouse, hitting a keyboard key. If that doesn?t work try pushing the power button on the computer to turn it on. If all else fails pull the power plug on the computer itself, plug back in and it should start up. I would suggest disabling all of this via Windows Power settings in the control panel. Let us know if you have any other questions and again please don?t forget to rate the post.