I recently purchased a Samsung BX2450 LED monitor and am experiencing issues with input. No matter whether I use HDMI, the DVI to HDMI cable or RGB cables, if I restart my PC, I get an error msg on my screen saying I must check my input. I am using a Sapphire HD5770 card.If I power don and unplug power to the PC for a period of time, I am able to get a signal to my monitor again but if I restart, the problem comes back. PLEASE HELP!!!!!!!!!!!
Sounds like either Power Saving issues or HDMI DRM link not working correctly. Make sure the power savings are shut off on the monitor and off for your display inside your OS. I'm not sure, because the RGB don't have the DRM link found in HDMI, but its worth some research. Try the monitor on another pc to pinpoint if the problem, if its the monitor or your pc.