HP Omen laptop won't start without the bottom cover

SkyTerran

SkyTerran

SkyTerran

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Joined
28 Jan 2013
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252
This is the first time I'm seeing such a behavior. I have an HP Omen laptop and I thought I'll change the thermal paste it came with with KryoSheet. I open the laptop, disconnect the battery, remove the factory thermal paste (as usual they put too much of it), put two CryoSheets on, connect back the battery and try to turn it on. The laptop would not turn on. I though I've fried something (the KryoSheet is electro conductive). Tried a few more times with and without charger connected - won't turn on.

I tell myself I don't really need a gaming laptop. Put the bottom cover back on, so I don't loose the screws. Try to turn it on one last time and it does turn on. So my hypothesis is there is a sensor that detects if a bottom cover is attached and the laptop doesn't start without it. Does that make sense? Have you seen something similar on other laptops?
 
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Hmmm, just found out that removing the back cover while the laptop is working leads to it turning off immediately. I'm starting to think there's a problem with the motherboard PCB.
 
It's definitely not the battery - the laptop doesn't start when the bottom cover is not attached at the top near the function keys and the battery connector is at the bottom near the touchpad.
 
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