This support topic might also apply to you. Especially the part about contacting EzTune support to report issues not listed.http://www.portrait.com/dtune/gwy/enu/support_help.html
Use Windows 7 Device Driver update option to try and find an updated monitor driver.
At the Start Menu type drivers into the search bar.
From the Control Panel section choose Update Device drivers.
In the Device Manager window that opens find the Monitor section & click the little triangle open to see your monitor.
Right mouse click on your monitor and choose Update Driver Software and choose Search Automatically for Updated Driver Software.
If Win7 can't locate an updated driver search the Gateway website and see what they have available. Nothing found?
Check the Gateway support forums to see what other FPD2185W owners are doing with Win7.