The issues stem from the install images used on some pre-built AMD machines. the manufacturer (HP is the one I have heard named) used the same image for both Intel and AMD machines. Intel machines require a certain file that AMD does not, but if SP3 comes across this file it puts it into play. This causes a reboot loop on affected machines.
Google the issue and you will find the info you need to see if you have this file and to remove the file if you do. Once it is removed, there shouldn't be any problems.