How do I get updated drivers for windows 7 to run a LCD monitor, resolutions only go to 1680?

Right click on desk top and get the menu for changing screen resolution.

Update your graphics card drivers to the newest ones available. That is typically caused by having the default windows driver for your graphics card. If it is a Nvidia gpu get the drivers from them, itf its an ATI/AMD get them from AMD Game. If it is neither of those Intel does some graphic cards, if its not an Intel one go to the computer manufacturers website and find your model to get drivers for it.

Native resolution: 1680 x 1050 @60Hz
Resolution adjustment:
From Microsoft: http://www.microsoft.com/resources/documentation/windows/xp/all/proddocs/en-us/display_change_screen_resolution.mspx?mfr=true

and here:
http://www.helpwithpcs.com/tipsandtricks/changing-screen-resolution-win-xp.htm

and here:
http://www.videojug.com/film/how-to-change-screen-resolution-in-windows-xp-and-windoiws-7

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.

You should adjust the video resoltuion (at the PC) to the native resolution of this monitor, which is 1680 x 1050 @60Hz, the resolution is controlled by the PC, not at the monitor.

Resolution adjustment:
From Microsoft: http://www.microsoft.com/resources/documentation/windows/xp/all/proddocs/en-us/display_change_screen_resolution.mspx?mfr=true

and here:
http://www.helpwithpcs.com/tipsandtricks/changing-screen-resolution-win-xp.htm

and here:
http://www.videojug.com/film/how-to-change-screen-resolution-in-windows-xp-and-windoiws-7

Please leave rating if it helps.

Basic LCD monitor and LCD 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

Failed TV, Monitors, Caps : http://s807.photobucket.com/albums/yy352/budm/

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

As for your 15" LCD BENQ Monitor, "1024 x 768" pixels is the Maximum Resolution
If you increase your screen higher than the Maximum resolution you get a black screen! because the monitor cannot support the resolution higher than "1024x768" pixels.

How to change your screen resolution Win 7-> Link

FYI
Here are typical resolutions for some popular screen sizes
19-inch screen (standard ratio): 1280 x 1024 pixels
20-inch screen (standard ratio): 1600 x 1200 pixels
22-inch screen (widescreen): 1680 x 1050 pixels
24-inch screen (widescreen): 1900 x 1200 pixels

Hope it helps.

i think this is depend also in your vega card , try to found the latest driver update of your vega card

Go to Windows 7 web site and check the equipment compatability list for your monitor.

If it is there - read the particulars

If it is not, complain to the monitor manufacturer - ask them to create a driver for this model.

I hope this helps you

Thanks for unit FixYa.com

Positive comments welcome

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The same to me
I think the monitor is broken

Make sure your video card is capable of supporting that resolution and also make sure your video card drivers are up to date.

Without more details, it is really hard to provide assistance but here are some general items without knowing the model Monitor, the video card or the operating system you are using.

Generally (I can't know for sure without the LCD model) 22 inch LCDs have an optimal resolution of 1680 by 1050 pixels.

So the first thing you need to do is ensure that the video card display resolution is set to 1680 by 1050. If 1680 by 1050 is not an option in your display properties (In windows XP, right click the background, click properties, click settings tab, then slide the resolution bar to 1680 by 1050. Click OK) then try upgrading your video driver.

If that doesn't give you the 1680 by 1050 option, then your video card may need replacement with a better card.