1.copy all the content of windows 7 to flashdisk
2.change file 'bootmgr' to 'NTLDR' (upcase)
3.restart computer, and go into bios, change 1st boot to flashdisk
2.change file 'bootmgr' to 'NTLDR' (upcase)
3.restart computer, and go into bios, change 1st boot to flashdisk