hi guys . i have a strange problem with my notebook hp elitebook2540p . when i turn ON is keep reseting bios (bios default) : problem 1 - with battery removed , permanently connected to the power socket, is ok - start normal / Prob 2 - on battery ( not connected to the electric socket) every time i turn on keep reseting bios ? / Prob 3 - If i just connect to the power socket with or without battery i get BIOS default . i replaced 4 BIOS battery bought from different shops and i get same result . Any ideea what component is controlling the power on this laptop or what voltages to check please ? I dont have much experience but i can replace any components on the motherboard also to test some voltages
thanks
thanks
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