i have a pre-installed windows 8 laptop. while trying to install ubuntu 12.04 LTS, i encountered a problem booting win 8. says invalid efi path. though ubuntu booted without any problems, so in my bios, i changed the boot mode from uefi to legacy. but now i cant boot win 8 nor ubuntu. the system just says: no operating system found. i cant even access my bios, i tried all the function buttons. ...
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