ESXi 5.1 5.X Locks Up On megaraid_sas

I have to give HUGE props to twincarre on youtube for their post on the original fix that led me to the following fix:

It appears in the use of some LSI controllers will freeze up on install when attempting to load the megaraid drivers. This also includes Intel RS2WC040 controllers since they run the LSI 2008 controller.

The Fix is to disable legacy booting. This is either in the PCI configuration, or in the boot configuration, depending on BIOS configuration. Huge props to Twincarre for helping at least direct me toward this fix!

Source: http://www.youtube.com/watch?v=e6Kkr-Ba3rU