Dual Screen via VGA connection plugged into first monitor - how do I get it to detect?

[Fairydust143]

Hi there! I have a new computer. Samsung screen connected to computer via HDMI. Second screen is dell, plugged in via VGA cable into the the back of the monitor. How do I get the Samsung monitor or computer to recognize the second screen? Thanks for your help!

 

[alexoiu]

Hi, What board using?

 

[ffg7]

onboard video or videocard?