Horizontal I accidentally hit the auto button on the front of my monitor. The resolution was set at 1080x 1224 (or something like that) and it produced a black horizontal bar about 3 inches wide. I tried setting the horizontal, but it wouldn't put it back where it was so I had to go with a lower resolution. Can you help me reset the resolution??

Did you try hitting the Auto adjust again to possibly shut it off. Quite often the buttons work as off and on buttons such as the Caps Lock. you hit it and it's on. You hit it again. It's off. If you hit the Auto adjust it might shut off and re-adjust your screen to the original setting you had. ....don't forget that you made other adjustments to compensate for the mal adjustment that will need to be fixxed. good luck.

That auto configure button is for the monitor to adjust it self to correctly display the correct resolution as FED BY THE VIDEO card, the resolution on the monitor is CONTROLLED BY THE computer, not by the monitor.
If the resolution setting on the computer is not showing the 1280 x1024, then either the driver for the video card is corrupted or need to be reloaded.
Native resolution of this monitor is 1280 x1024 @60Hz.

Service manual: http://elektrotanya.com/lg_flatron_l1719s_l1919s_chassis_cl-82_sm.pdf/download.html

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: 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.

First set the auto into the monitor settings ..bypressing the auto setting button ...
After that go to resolution settings by double click the image driver icon in the task bar (tray system ) ..and set a suitable resolution ..
try them one by one until the screen is looking normal ..
The same thing can be changed from the desktop properties...settings ....to do so ..right click on desktop ...choose properties..than settings ...and in there you will have resolution setting ...change them until the one that fits the best ...when you hit the right one confirm the change..and this is all..

Change your screen resolution to the highest setting first, in control panel, appearance/ themes. Next Push smart button on bottom right of monitor. Cinema mode should be highlighted hit autoset on monitor. Next hit the FUN button and highlight the 4:3 screen setting. This will expand your image to fit the screen without giving it that stretched and distorted appearance.

push the auto set button on the monitors.
it has reset too. stated in the manual.
does it fail on PC #2 is no then the PC you failed on is bad.
NO PC stated
no OS stated is this XP
or the monitor is bad, as all are this old they die.
the 2nd PC test solves this in seconds work.
even an older Laptop has VGA on the rear, that can be used to do this.

Check your PC video setting, ti should be set to native resolution of this monitor for best picture and aspect ratio, 1280x1024 @60Hz

1 use the install disk that came with the monitor.
If this does not work then you may have an issue with the electronics.
2. take unit to a certified technician to check the circuitry.
3. this could be a inverter gone bad.

if it is an lcd monitor make sure the refresh rate is set to 60hz and the resolution is at least 1024X768 then try to push auto adjust again. To get to the refresh click on the advanced button when the display properties is open.

Oldie, The first thing to do is set the monitor resolution, color depth and monitor refresh rate to what you want then adjust the monitor accordingly. Adjust resolution, color depth and refresh rate for Windows 2000/XP: -Right click any clear spot on your desktop and select properties from the menu that appears. -From the Display Properties box that appears click on the Settings tab. -In the screen resolution section (lower left corner) experiment with the resolutions and see what you like. -The color quality box should be set to the highest (most colors) color setting listed. -Click on the advanced button in the lower right corner. -In the next window click on the monitor tab. -Typically you would want to set it at 70 Hertz or better. The higher the setting the less flicker you will notice, however, there is always a trade off. I would start with 70 Hertz and gradually move up; at some point your monitor will reach a setting it can?t support. If the screen blanks out Windows will reset back to the previous settings as long as you don?t hit any keys. -click the OK button twice. More to follow?.

OK you need to try this monitor on another pc so as to write off a faulty graphics card. If your settings on monitor match the pc and youve tried the auto settings button, there is a faulty lcd for replacement.