I had one with the same problem. All the capacitors in the power supply were fried. If you're good with electronics, you can pull it apart and replace them (about 8 bucks in parts) or take it to someone who is.
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it sounds like a deleted driver? try getting the driver for the monitor, did you loose the Operating system at some point, if so try a system restore to a date when the computer was working properlly prior to the malfunction. It sounds like it restored you to a time before the driver for that monitor was installed.
LCD panels use cold-cathode fluorescent bulbs to make the light necessary for them to show images. What you're describing is something I've seen in panels where the bulbs were dying or dead. it's also possible that the controller for the bulbs is also on the fritz.
1. Unplug the AC power cord to make sure the power is off.
turn the monitor upside down, you need 2 people for this.
2. Pull the 4 hooks on bottom side of the base and hold.
3. Separate the monitor and base.
Lines caused by a bad LCD screen and lines caused by poor sync.
A bad LCD will cause perfectly straight vertical and horizontal lines that don't move at all. This is because the row and column addressing ICs have gone bad, so you will end up with rows or columns of bad pixels.
Poor sync looks more like what you are describing. The picture will flip vertically and horizontally.
Poor or missing sync can be caused by a bad video cable, or a bad IC on the main board.
If the monitor has a removable video cable, borrow another one from a friend to test if the monitor is working. If it works, head to your local computer store and buy a new cable. If the monitor still doesn't work with a different cable, you may have a bad main board. The only way to repair the monitor will be to replace the board.
If you open the monitor, be sure to check for bad capacitors. They can cause all sorts of strange faults. Look elsewhere on this site for how-tos on inspecting capacitors.
If your video cable is not removable, there's not much you can do. You will need a way to test that each pin on the cable connector on the main board conducts to a corresponding pin on the other end of the cable. You can do this if you have a multimeter, or a continuity tester.
Hope this will give you hint in solving this problem. Try configuring monitor settings in OSD mode; contrast; brightness; etc.. other special settings can be accessed using combination of buttons to minimize the raster intensity. On hardware side try resoldering cold soldered points and check the SMPS side.
I think you have loose cabling somewhere. Try to unplug (and untangle) the video cables and then plug them all back together firmly. If this does not work and you know your machine is booting up properly, you might have damaged the monitor somehow accidentally.