I am having trouble replying to existing post by Chris Brewer on this subject.??? I was having the same problem. I configured the machine to 1 CPU and 2048GB and it booted. I changed back to 2 CPUs after shut down, and it still booted. I hope this helps.
Knowledgebase article created Hello, There was a Knowledgebase article created regarding this issue, please have a look at: http://kb.parallels.com/en/6873 Thank you!