История для "No Display or Disk activity."

Hello. I am having a problem with this PC. I boot it up, and I do not see anything on the display. I do not see the Toshiba splash screen. Also, there is no disk activity. The only LEDs that light up is power and wireless. Please help me, as this is my daily driver laptop. It has Windows 7 Home Premium SP1 x64 installed.

Устройство:

Toshiba Satellite L775D-S7340

Статус:

open