I removed my LCD with Inverter, because it was broken. I'm using a Inspiron 4050 with a HDMI or VGA connected at TV, but the BIOS beeps(8times) continuos for ever and ever.
There is a way to control the beep volume or mute it through Ubuntu?
The sound is most likely produced by the
If Ubuntu is doing it, then the above answer is good. But "no monitor chipset" is a Dell BIOS beep code output.
Put in a cheap video card, maybe, the on-board chipset may be broken. You don't have to attach a monitor.
Failing that, physically detaching the PC speaker inside the case is a reasonable option.