That's an ext. monitor is it available on the properties setting of video? You have to defer to it, thus select it. Under XP things can be difficult to do. From memory I suggest you check the video setting, it maybe offering displays(small monitors) like #1 and #2 to pick from, the default being the LCD of laptop as #1. I suspect the ext. VGA port of your laptop is OK. Plus, it's active, so verify from bios that is is enable or available, etc. if applicable. Come back with results.
I'm trying to connect a Sansui HDLCD1955a "monitor" to my Dell Inspiron 1501 laptop, and I cannot get it to work. Help!!!