Early 2011 MBP not turning on

[brainwave89]

When I press the power button I hear something engage but there is no start up gong nor does the screen change at all. I swapped out the hard drive cable from a working 2011 MBP and that cable works great.

The same result happens with the power connected and not connected. The battery indicator on the left-hand of the MBP shows the battery is fully charged.

Any suggestions on what might be the problem is appreciated.

 

[chscag]

Does the screen light up at all? The lack of the POST sound usually indicates a hardware problem. It could be a bad power supply or a dead GPU.

 

[brainwave89]

Thank you chscag. No, the screen light does not turn on at all. I will check out your suggestions.

 

[brainwave89]

The power remains on when started. When I hook-up an external monitor all I see is vertical lines on the external monitor. I presume that confirms the GPU is dead, right?