Hi DrNeedsHelp,
Welcome to the HP Forums!
I would like to take a moment and thank you for using the forum, it is a great place to find answers.
For you to have the best experience in the HP forum, I would like to direct your attention to the HP Forums Guide First Time Here? Learn How to Post and More.
I grasp that you are having an overheating issue. Here is a document to assist you. Troubleshooting an Overheating and Auto Shutdown Issue.
If this has not helped I would suggest posting on the commercial forum. I am sorry, but to get your issue more exposure, I would suggest posting it in the commercial forums, since this is a commercial product. You can do this at Commercial/Notebook PCs - Pavilions, Presario. Their resources will cover your exact product.
I hope this helps.