Per the OP's information, if it is a 29 inch monitor running only 1366 resolution, that would implement that the connection itself is fully analog VGA.. which will require him to manually adjust his settings via Windows. Older monitor's can be a pain to work with using modern technology.. even running a KVM for vga to HDMI (digital) can only compound the issues.. which again require manual adjusting through Windows. This only happens with incredibly old monitors, as most modern ones will automatically correct. I have dealt with this issue many times working as an audio visual technician.. sometimes the monitor itself is the cause for the issue and adjusting settings don't help.
For instance, I have an old plasma rear projection that runs 576i as a standard resolution and Windows refuses to allow proper setup/resolution scaling regardless of the software behind it.
In the OP's instance, I generally would recommend checking the quality of the cable in use to make sure no pins are damaged.. if that isn't the case, getting into Windows visual settings and adjusting DPI and trying to upscale/downscale the resolution to see if it solves the issue.