DELL Inspiron Beeps on startup

1 beep means everything is ok.

2 beeps: no memory detected.

3 beeps: chipset error

4 beeps: memory failure

5 beeps: CMOS battery failure

6 beeps: videochip failure

7 beeps: CPU failure

8 beeps: LCD failure.

Same at: Vostro, XPS, latitude, precision.