Nothing busted I fear. It's one of those Windows annoyances that we have to tell Windows the monitor capabilities. There are more than a few ways but I'll share what I do.
1. Find and offer windows the MONITOR.INF for the new monitor so it knows about it's "skills." After that head to display properties to set not only the screen size (pixels) but pick what monitor to use.
2. If you couldn't do item 1, try setting the video screen pixels manually and try other refresh rates.
Remember this is not a bug but an annoyance. Nothing busted but something we all wish would just work without out help.
I just bought a HP nx7400 laptop (EN352UT) with a docking station (EN488AA). I use Windows XP SP2 and all the latest drivers from HP web site are applied.
My monitor is an Acer AL1916W, with a native resolution of 1440X900.
The problem is that when I use the external display, connected to the docking station, about half an inch of the screen is missing to the right hand side. If I use a program in full screen I cannot see the right scroll bar. I do not see Windows clock either.
Any tips or suggestions ?