NOT insert any disc into CD-ROM
if you want to recovery With an USB device
Bad BIOS Checksum Starting BIOS Recovery...
checking for CD-ROM...
CD-ROM not found !
checking for USB Device...
USB Device not found !
checking for CD-ROM...
CD-ROM not found !
checking for USB Device...
USB Device not found !是怎么回事哦?望老大解答一下!小弟就此拜谢