Such a beep means it's trying to tell you something. The exact meaning of the specific beep pattern should be document in the BIOS or motherboard manual, or on the Dell site or Dell tech support knows. It's something like bad video card or bad RAM.
Kees
I have a Dell Insperon 1545 15mons old .Upon turn on there is a Beep followed by another .No display on screen but the cd drive runs

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