メモ
http://download.microsoft.com/download/5/1/9/5195A765-3A41-4A72-87D8-200D897CBE21/7601.24214.180801-1700.win7sp1_ldr_escrow_CLIENT_ULTIMATE_x64FRE_en-us.iso
http://download.microsoft.com/download/0/6/3/06365375-C346-4D65-87C7-EE41F55F736B/7601.24214.180801-1700.win7sp1_ldr_escrow_CLIENT_PROFESSIONAL_x64FRE_en-us.iso
http://download.microsoft.com/download/E/A/8/EA804D86-C3DF-4719-9966-6A66C9306598/7601.24214.180801-1700.win7sp1_ldr_escrow_CLIENT_HOMEPREMIUM_x64FRE_en-us.iso