My laptop gives one continuous beep at start up then nothing

[Guest]

my laptop gives one continuous beep at start up then nothing, wots up please

 

[flank21]

idk, since thousands of different variations of laptops have been made, it'd be helpful if you listed the manufacturer and model number.

 

[blackns]

Try booting without anything connected (make sure battery has power first), then add mouse/kb after 1st test.