My Acer monitor has 3 inches missing on the left side and 3 inches black on the right

It sounds like the monitor is broken. You should probably just buy a new one. If you haven't already, try checking the cable connections to the pc. Outside of that, there's not much you can do. Hopefully you still have a warranty on it and cant have it fixed.

it happened to me. I changed computers but that did not solve the problem so it's not the video card. what did help was I turned off the monitor to reboot it then, using a different computer I reset the resolution to the lowest possible setting. when the monitor adjusted to the new resolution it reset itself. I then set it back to the higher resolution and everything was centered again.

The resolution settings are defined by your operating system you are using.
Older than Vista:
Right click on the desktop choose properties
Settings tab at the top
Oon the left side the bar until you reach 1024 X 768 ( most web site are created by this resolution.

Vista or newer:
Right click on the desktop choose personalize.
At the bottom of the page that showes up click on Display Settings
On the left side the bar until you reach 1024 X 768 ( most web site are created by this resolution.

Hope this helps,
Terry

The "native" resolution of the monitor is 1440 (not 1400) by 900.

Set the video-card to 1440-by-900 or try 1080-by-675 or try 720-by-450 or try 960-by-600.

if you have the small 8.9 inch screen acer one, there is a button on either side of the touchpad...if you have the 11 inch acer one, the button isa one piece mouse button that pivots at its center point. Push on the right side to right click and push on the left side to left click.

try this restore to defualt values monitor and cpu

NOTE:(Edited and copied from another thread on Fixya.com, c7carl)

Picture is not centered on monitor leaving a 2 1/2 inch; black border on Philips LCD
By dmorrow54 on Nov 13, 2007
Again, nothing in manual for Philips LCD will correct the fact that the picture in HD-D mode will not center. The picture runs off the monitor on the left (facing the monitor) with a 2 1/2" black border on the right (facing the monitor). Using the format button on the remote of directional arrows will not correct the issue. The wide-screen/ full-screen function with format does nothing. Moving into TV mode, the format function works to display screen in several ways 4:3, 19:2, super-zoom, wide-screen, full-screen. Help, please. posted 3 years ago

Guest

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I have a Philips 30 inch LCD and solved the problem by using the circular arrow button on the TV remote. Pointing it at the TV and clicking "right" (3 o'clock on the button), the picture moved right. Same thing on for "left". Worked for me.
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   • c7carl
   • 5 minutes ago
   WOW! It works!! The picture on my Magnavox (aka Philips) 37MF321D had shifted to the right. I figured I had a big repair bill coming up soon. But hey! Just used the TV remote as described by "Guest', and re-centered the picture to the left. Wallah! Thanks ""Guest" whomever you are! Reply
   
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Try going into Start - Control panal - add new hardware. First let windows look for itself ;then If it doesn't find the monitor then tell it monitor and see if it will find the correct driver for it. Worth a try.

Hi Bj, Is it an aftermarket video-card? If it is, like ATI or Nvidia, Download the recent drivers for your particular card, Uninstall your Videocard from device manager, then install the software.
CoDoc

1 it is due to horizntal output trnansistor. 2 capacitor connected to horz output. 3 flyback transformer. hope this will help you.