hello all, i have a toshiba a-55s laptop that has been working just fine, but now it won't go to the operating system. when i open it up and turn it on, i get a blinking cursor. none of the function keys work, nothing works on the keyboard at all. finally, like 45 min later, it will say "initializing and establishing link". then it will hang there for like another 2 hr. it MIGHT eventually turn on, but no guarantee. any ideas on how to fix it?