Okay so I got the parts unfortunately the Heatsinks are not the same. Instead of getting another I opted to drill out the broken screw and used a larger screw to hold down the heat sink & added new thermal paste.
Initially I was getting RLOD but with some luck have been able to get the system to boot. But now I have a new problem:
When turning on the console, I get a green light and while the system is running, I get no video and no audio. In order to power down the console I have to hold down the power button or unplug it as simply pressing the power button does not work.
Additionally, after a few moments the system fan will gain speed and the console will shut off on its own after about 3 minutes or so.
Please help me Thanks! :D