While you wait for answers, we may have found some information which could help you.
Click here for Laptop Turn LightHow to fix dell Inspiron 5040 laptop windows 7?
Dell latitude c400 intermitent lines on screen?
how to fix dell inspiron 1545 date and time?
Right Click pad on my Lap top does not work, can this be fixed?
dell inspiron 5040 plugged in not charging?
DELL won't turn on?