Adding Win 7 as a second operating system to Ubuntu [migrated]

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http://askubuntu.com – I have installed Ubuntu as a primary Operating system on Compaq laptop, because the win 7 system was corrupted. I tried to reinstall win 7 as a second OP system from a CD and a flash drive and received a message stating that it didn't have a way of reading the startup or setup execute file. What can be done to over come this problem? I have a desktop PC with windows 7 and Ubuntu dual boot, didn't have any problems with install. Ubuntu version is 11.04. Thank you! (HowTos)