Invalid EFI file path

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http://askubuntu.com – i've just installed Ubuntu 12 on my new laptop ( with Win7 64bit pre installed ) in EFI mode and now i can't load Win7 anymore ( Ubuntu just loads fine from grub ). When i select the Windows 7 entry in the grub menu, i get this error: Invalid EFI file path The grub.cfg entry ( generated by boot-repair ) is: menuentry "Windows 7 (loader) (on /dev/sda3)" --class windows --class os { insmod part_gpt insmod ntfs set root='(hd0,gpt3)' search --no-floppy --fs-uuid --set=root B8449665449625E2 chainloader +1 } This is the parted output : GNU Parted 2.3 Viene usato /dev/sda B (HowTos)