video cards have you tried? There are quite a few people that have 800x480 working perfectly with this monitor. Some graphics chipsets just don't work with 800x480, even when using utilities to force it. For instance, I've never gotten any Intel video chipset to display 800x480 in any usable form. I have to use 800x600. It's not the fault of the monitor - it's all due to my chipset failing to properly support 800x480.