XFX HD 6770 and Acer Monitor on DVI - Input not supported.

OK, so I just did a major upgrade to my computer. New CPU, motherboard, ram, and graphics card. Everything is working great except my acer AL1916W monitor. I have it plugged in to the DVI port on my new XFX HD 6770, but the only resolution I can get working is 640x480 (actually, if I use the AMD Vision Engine Control Center with the HDTV support option, I can also get 720p60 working with it). Any other resolutions and the monitor just says "Input not supported"

The monitor's native resolution is 1440x900, and it was working fine this morning on my old Geforce 9800gt (with DVI)

I tried plugging it in to the VGA port as well, and it seemed to work fine with that, the only problem is, I have a second monitor, and the only input it supports is VGA, and the XFX card only has one VGA port, so I cant have both monitors using VGA...

I have the latest CCC drivers and stuff. I just cant figure out what is wrong...

Nope, didn't fix anything

When I go in to the Vision Engine Control Center properties for the monitor, it tells me the maximum reported resolution is 640x480, which obviously isn't correct.

I also tried with only the Acer monitor plugged in (still in the DVI port) and it still didn't work. Although, like I said in my first post, it works fine using VGA. Unfortunately, I don't have (easy) access to any other DVI monitors, so I can't check to see if they work. I did test the HDMI port using my TV though, and it is working fine.

Also, apparently 720x480 also works, so that makes it 640x480, 720x480, and 1280x720. Everything else that I tried just came up with the "Input not supported" screen on my monitor. :/

Any more suggestions would be greatly appreciated!

I have tried two different DVI cables, but both are from around the same time, and they are only single-link. Would a dual link cable fix the problem?

And how would one go about forcing a resolution?

Have you installed the monitor driver yet?

Acer Support: Downloads & Support Documents - Monitor / AL Series / AL1916W

A lot of monitors won't run at the correct resolution(s) without it.

I tried, but windows won't let me install it... Apparently it isn't designed for 64-bit systems.

Give this one a try,

AL1916wc.zip

I use it on the exact same monitor on my kids computer running 64 bit. Likely have to install it manually through Device Manager,

Driver Install - Device Manager

Its OK, I finally got it working using this marvelous tutorial: Force DVI/HDMI resolutions and refresh rates

Thanks for the help everyone!