Windows 7 32-bit not booting after installation... Mac Pro 2,1 Quad Core 2.66

I am trying to install Windows 7 Home Premium 32 bit on my 2006 Mac Pro (Upgraded to 2,1 firmware). However after the installation has been completed and the computer restarts it just reboots back to the start of the Windows set up installation process. If I restart it and select the Windows disk drive at start up with the install disc removed disc drive then all I get is a black screen with a flashing underscore in the top left corner.
Any help would be greatly appreciated.
Computer Specs:
Mac Pro (Early 2006) 2,1 firmware
2x 2.66 GHz Dual-Core Xeon
8 GB 667 MHz DRR2 Ram
Nvidia GeForce 7300 GT
OS X Lion 10.7.5

While not same scenario, the chart you'll see is useful.
Going from Vista U. 64 to W. 7 64 Home Prem. I unknowingly lost support for more than 1 processer
See maximum physical CPUs supported below.
In Vista U. Mac Pro 3.1. Task Manager showed 8 performance graphs (1 graph per cpu/mem).
in Winndows 7 Home Prem., there are 4.
Scroll down to edition comparison chart.
http://en.wikipedia.org/wiki/Windows7editions

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While not same scenario, the chart you'll see is useful.
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Scroll down to edition comparison chart.
http://en.wikipedia.org/wiki/Windows7editions

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Windows 7 32-bit not booting after installation... Mac Pro 2,1 Quad Core 2.66

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