I've recently purchased a private-built PC and hooked it up to my old analog monitor and ever since occasionally the monitor just goes blank for a few seconds then recovers with an error message: It's getting to be quite annoying as it now happens at least once or twice a day so I would like to solve this issue. I am using the computer for basic Internet surfing (so nothing display intensive like gaming) and it always happens when I am switching between different tabs or entering text in Firefox. The new PC has a GeForce GTX 460 graphics card with DVI connectors but since my monitor is analog I am using a simple dvi/vga converter plug. Plus there was an MSI Afterburner software installed to handle clocking I guess - I never touched it but I am not sure what was done by the previous owner. The monitor worked perfectly well with my old HP PC so I assume there's some compatibility issue with the new setup. I am attaching another screen shot from the NVIDIA Control Panel if this helps explaining the setting better. Please let me know what could be done to get rid of this annoying blanking out. Thanks in advance!