Warning at start

Hello!

Since yesterday makes my laptop after switching warning and then goes not high. Only when I hit reset, either normal or high the whole procedure is repeated.

This happens whenever I close the laptop and it is in standby mode, while it not unfolding more highly.

There are 3 beeps, who can help me?

Nope.

You can not imagine that different laptops from different manufacturers different tones for different errors may have?

In short: it lacks basic information!

it is an HP Pavilion dv6000 notebook