I run two monitors on my Dell M4400 laptop. Last week I was running fine with XP 64 bit. Automatic detection worked perfectly. Now I have installed Windows 7 64 bit and the computer does not detect the 2nd monitor. Is there a way to verify that the monitor is plugged into the video port? It is the same monitor as last week....

Have you UpToDate graphic drivers?

check ur graphic driver and see this tip: http://www.online-tech-tips.com/windows-7/how-to-setup-dual-monitors-in-windows-7/ regardsI want to be a MVP! | Computer Technician

Hi Bill, First, I would like to tell you that the mornitors are controlled by graphic card driver. As you just installed the 64-bit WIn7, it's better to update the drivers for your laptop, espically for the video driver, you can get the latest version from the following web site:http://support.dell.com/support/downloads/driverslist.aspx?os=W764&catid=-1&dateid=-1&impid=-1&osl=EN&typeid=-1&formatid=-1&servicetag=&SystemID=PREC_M4400&hidos=WLH&hidlang=en&TabIndex=&scanSupported=True&scanConsent=FalseAfter updating the drivers, you can test your issue again.Good luck!John