Hi...Just received a refurbished HP Computer desktop and when I plugged in the monitor HP Pavilion F70 it flashes up on the screen video input ... Do I need to change the resolutions? if so, how ? and what is recommended? it is a 17 inch HP screen monitor.

Thanks Karen

That's the monitor telling us it's not getting a signal. Since you don't see the BIOS screen either you need to try this monitor on another PC and another monitor on this PC to see where the issue is.

Then call it in for return or repair.