I have a HP x1907 display with recommended settings of 1440x900-60Hz and last week after restarting after an update (I want to say it was a HP Portrait update) I turned on the computer and the display settings had changed. I'm not even sure if this matters or if it's the cause of the problem with the screen resolution I'm having. You are not currently using a device attached to an NVIDIA GPU.' No idea what that means. Version 280.86 was installed, which gave me a NVIDIA settings icon in the toolbar that, when left clicked, says, 'NVIDIA display settings are not available. I did go to and have them automatically find drivers. There's no driver to roll back to and when I uninstalled it and then restarted my computer, it reinstalled but the exclamation point is still there. When I click on it and select 'Check for Solution' in the General tab, I get a window that says 'could not load driver software.' When I select 'Update Driver Software' Windows determines that the driver software is up to date. Under Device Manager, I do have an exclamation point besides NVIDIA GeForce 6150SE nForce 430 under Display Adapters. I'm running Windows Vista Home Premium 32 bit and seem to be having a problem with the graphics drive.

Nvidia nforce 430 drivers vista