64Bit:

http://download.msdn.microsoft.com/db/de_windows_7_ultimate_with_sp1_x64_dvd_u_677306.iso?t=629dd785-2624-4565-bc50-d2f5afd5a54f&e=1484784518&h=5ee45aa537eae0af52f793b352bbdc33

32Bit:

http://download.msdn.microsoft.com/db/de_windows_7_ultimate_with_sp1_x86_dvd_u_677456.iso?t=c0a4a03a-53e0-451a-a730-5ba4f6d29dde&e=1484784547&h=bf91e408fb4b3d9baaeebea87d8f9269