[ubuntu] unable to install a dualboot win7/ubuntu

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http://ubuntuforums.org – Hi everyone, I'm very sorry, but I regret telling you that I am forced to switch to windows again :( Any tool provided to install a ubuntu (full install, no wubi) has failed so far. My live cd -- ACPI: EC: Input buffer not empty, aborting transaction live cd Startup usb: loads ubuntu logo, but then says unable to load package linuz/..../etc. Downloaded iso: same problem as live cd... wubi install: unable to resize virtual disk (in fact I was able to, but it won't boot again, giving a minimal bas (Hardware)