+ 0 Votes re: Booting with external monitor. ThumbsUp2 5 years ago You should be able to boot with an external monitor attached and the laptop should attempt to display on both the LCD and the external monitor simultaneously. However, all laptops are different. The only way to know for sure is to try it. One problem you need to address first though, is the 2 BEEPS. Post codes are an indication something is wrong with the motherboard or something connected to it and getting 2 beeps isn't usually a good sign. Since I don't know the motherboard used in an Inspiron 8500 and I've tried to locate the beep codes at Dell without success, I think you may want to call DELL and ask them to diagnose the code for you. If it's a graphics problem, using an external monitor won't help.