Laptop HP 15 15 t-r160: computer laptop HP 15 - model 15 t-r160 will not light

I repair this laptop for a student who dropped the laptop at the rear left. I replaced all items broken or damaged hardware, but the mobile feed. It not turn on when she first he brought me so it must be a result of his fall, he. I did some research and tried all basic troubleshooting. I tried to do a hard reset, inspected all power button, replaced mounting with a brand new power button, detached and inspected all electrical port, confirmed that the magnet is located in the lid, etc... Currently, the laptop has no power cord or battery attached. No devices are attached. I ended up just try an another hard rest, press and hold the power button for ahour more this time. No go. I tested the power adapter and the power source, check everything very well. I tried to use a universal power adapter.

When the adapter is connected and plugged the whote in the charging port light is on. When I press the power button for the wireless press F12 to light up briefly (1 second) then turns off. No planned activity or noise can't indicating that she is turning.

Beased on my research, I knew that this is a problem with the lid switch, but I don't know what else to do or try. I'm a bit confused on how the lid switch may be the problem considering the cover is open, trying to power. The sensor thinks the lid is closed? In addition, where the sensor is located? My research leads me to believe that it is on the map of power button. But I don't know about you.

Any ideas?

THANKS in advance!

Actually, I figured out it is the LCD screen adaptor cable that it prevented power. The cable is frayed to. I expect that the BIOS OF THE system would have emmitted a series of beeps or something that indicates, but no. Disconnect the cable to the motherboard display adapter, then connect a monitor via a cable HDMI enabled power system and start the POST. Hope this helps someone else.

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