win7系统安装centos 7 遇到问题

本人所用电脑是华硕。我用u盘安装centos 然后出现以下错误
配置分区时出现错误：
No valid bootloader target device found See below for details.
For a UEFI installation .you must include an EFI System Partition on a GPT -formatted disk .
mounted at /boot/efi.
跪求大神解决。。。。