Greetings!
I have an Inspiron 15R 5520 with a P2241H monitor added. I was using a VGA cable since the 5520 only has HDMI and VGA outputs on it. I bought a HDMI to DP cable and the now the computer is not recognising the monitor at all. I have updated the bios and all my software is up to date. Running Windows 7 home premium 64bit.