I messed up my BIOS config for my LG GRAM laptop. When I turn it on it just turns off after a few seconds, without even showing anything on the screen.

So I said "No problem, I will remove the battery from the motherboard", but I'm not able to see that CMOS battery. I think I've removed almost all the pieces but I found nothing. I also disconnected the motherboard from the battery of the laptop and wait for more than 15 minutes, but that didn't work either.

The exact model of my laptop is LG GRAM 17z990.

I need to reset the BIOS because I can't even access it. Do you know how to reset the BIOS for these laptops? Thanks!


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