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HP EliteBook 850 G5 Notebook PC
Microsoft Windows 11

Hey, my EliteBook 850 G5 has updated, and now it won’t turn on. I have tried removing the battery, but that didn’t fix it. When I try to turn it on, the keyboard lights up briefly, and then everything goes black again. It keeps doing this, almost like it's pulsing. It's been doing this since I tried to power it on a few hours ago. I can't even get into the BIOS.

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