HP Pavilion dv7-3160us. Windows 7 Home Premium.
I was using my pc, left room for a few minutes and my pc appeared to be in sleep mode. Tried to awaken it to no avail. Unconnected power cord and battery and tried to start again but would not. My HP symbol light on the back of my screen lights up, lights on keyboard are fine, & power light in front of pc will light. My screen stays black. No error messages, no anything on the screen. Will not even display HP symbol on screen at startup. Hard drive light on front of pc by the power light will not flash. Appears to be no boot whatsoever. Tried hard drive in another computer and can access it fine. Any advise would be appreciated.