Re: Need help with booting laptop after failed sysprep and change UEFI to legacy BIOS
2019/01/08 00:42:09
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I had a similar problem recently with a desktop system that would no longer allow me to access the BIOS. I finally got around it by locating and removing the BIOS jumper (Removing the cmos battery does the same thing). On next boot, I got an error message, but it allowed me to get into the BIOS. I reset to default settings and saved - problem solved!
YouTube has a few videos on "resetting the BIOS on a laptop". Maybe one of those will help you get back in... Good luck!
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