Hi, I got 2 HP monitors 1.) HP 2311x and 2.) HP 1740
all the time was using HP2311x and second monitor from another brand. one day turning on my PC second monitor turn on, but my HP2311X too and realy fast whent black. closly looking can see screen. turning off and then on its show for half secound normal screen and run to black/blank again! i try to connect my HP 1740 and same store. then i try to connect both monitors to my HP Laptop and same story, then i try to connect my other monitor witch not HP, it works on any PC/Laptop! Please Help, Thanks!!!