I have installed Windows 7 64-bit on several Mac OSx computers without problems. The last minidump points to general Windows instability, that's all... You must not have any yellow exclamation points in the device manager. These must be resolved. They are most commonly resolved by applying ALL Windows 7 updates! Mac OSX and the CPU is 64-bits so you can install Windows 7 64-bit without trouble. Although Windows 32-bit will work too