You got the wrong cable. Use DVI to HDMI cable [URL]  
Trying to connect Dell Lattitude 5580 laptop to Dell Ultrasharp 2209WA LCD monitor. I bought a VGA/HDMI adapter cable, plugged VGA into Ultrasharp and HDMI into Lattitude. The monitor won't recognize the VGA cable and so being able to project on 2 screens not working. What am I doing wrong? What else can I try?  Trying to make an inexpensive WFH set up. 
Connect Laptop to Monitor Projection Not Working