Check in BIOS for a chassis intrusion detection setting and if there is one disable it.
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=== Update (06/12/25) ===
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@ashleywall48429
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Try the following:
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Disconnect the charger if connected and then open the laptop and disconnect the battery from the motherboard i.e. just unplug the battery cable.
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''Press and hold the laptop's Power button operated for a full 30 seconds and then release it.''
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Reconnect the battery cable to the motherboard, reassemble the laptop, connect the charger and check if it now turns on and that you can get into BIOS.