I get used HP 1955 LCD monitor, which would flash once on power on, and then go black, screen showing a picture 1/10 of a second. In the 1/10 of second I see small monitor display says No Input signal, suggested resolution and more I can’t read. I did reset memory and download HP driver. I have Dell 1504 FP and this work well on the same computer. Any other buttons like Men, Auto Adjust not working. Only the power button works. Any suggestions what test I can do to find out what is wrong with Monitor?