Think I may have solved the issue. Burnt the image to DVD instead of USB and it is now booting up. For some reason the server doesnt like to boot up off USB.
Hello all,   I am receiving the pink screen of death and the error “Could not load multiboot modules:bad parameter” when trying to upgrade from ESX 4.1 to ESXi 5.1 on a Dell PowerEdge R210-II with 32 GB of RAM. According to the HCL it is supported. BIOS is running at latest supported version of 2.8.0.   I found the VMWare KB below but could not find any module errors in the /var/log/messages file: ESX/ESXi driver module fails to load and reports the error: Bad parameter (1038247) | VMware KB   Server specs are as follows: [URL]   Any ideas why its not working?
PSOD on ESX 5.1 upgrade - Could not load multiboot modules:bad parameter