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problem after BIOS upgrade acer aspire ES1-511

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hello,
i have recently update the bios of my laptop acer aspire ES1-511 from 1.03 to 1.10 and now i have a lots of problem: my keyboard doesn't work anymore, sometimes the touchpad too, and i can't turn on my computer if the power cord isn't plugged in.
i thougth i could reset the BIOS but when i go in the BIOS screen the keyboard doesn't work, so i can't press f9 for the reset. what i have to do? i've open the laptop but i haven't find the CMOS battery or the jumper for the BIOS reset.
please help me to fix it.


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