Windows 7 installation won't boot

When I try to boot the installation from a CD it just continues to the current operating system (Windows XP). When I copy the installation files to an USB or External Hard Drive it gets stuck at "Loading Operating System". I can't install from Windows XP because im trying to install a 64-bit version of Windows 7 and Windows XP is 32 bit so it won't run.

Motherboard: Gigabyte GA 990 FXA UD3
Asked Mar 21, 2014

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