CPU heat issue

Hello, recently my computer began to shut itself down. I had previously gotten BSODs based on memory and ram issues, so I figured that this was the problem. However when removing the ram I noticed that my cpu (or the heat sink rather) felt very hot. Removing ram didn't resolve my issue, however my BIOS was displaying my CPU temp as being 100C and it shuts down once it reaches 106. It gets to 100 degrees within a minute of starting. I replaced the thermal compound, and I'm 99% sure that the heat sink is mounted correctly. I changed the voltage going to the cpu. After doing this my monitors won't start and USB ports no longer function. Could this still have a cheap and easy fix? Or does it sound like I'll need to replace the cup or heat sink? My cooling system is a Coolermaster Seidon 129m water cooler, CPU is an OEM AMD FX-8320 3.5 GHZ eight core, and MOBO is MSI 970A-G43
AMD 970 CROSSFIRE AM3+ DDR3 USB 3.0 SATA. I appreciate any help.