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I recently update my BIOS  from 1.21 to 1.51  on My  HP Elite x2 1012 G2  after updating the computer wont charge  and my adapter has ability to show voltage that is used by  a device now it shows 5.2v which is very low for pc but when i put on other computer it shows 20v  i tried to rollback to 1.21 but i was forced to rollback to 1.24  and the issue keeps persist  wont charge 

i need help

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