How unlock Sony Vaio BIOS

Hi. I have a notebook Sony Vaio pcg-91311l (vpcej14fx). The user set password on BIOS and forgot it. How can I reset it?

I have tried:

1. Take away the battery for 30 minutes.

2. Sony support want the documents which doesn't present

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@s0rt3r To reset the bios on most sony vaios you need to disconnect the cmos battery . You need to tear the machine down to the motherboard and locate the battery its usually green and looks like to small round batteries taped together kinda like a figure 8 theres a lead coming off the battery that needs to be disconnected black and red wires. After disconnecting do a static discharge to remove any residual power that could still be in the board . Remove the battery and any power which you should have done before starting then hold down the power button for 60 seconds. I like to leave the computer sit for an hour or two before putting it back together reconnect the bios battery and reassemble the computer. This should fix your bios problem

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