The 4x40s series with Ivy CPUs is not supported. Note: ProBook Installer v6.1.11 supports installing Snow Leopard on the ProBook 4x40s with a Sandy Bridge CPU. This is mostly thanks to the fact that the hardware is very generic and well supported by current versions of Mac OS and to all who have contributed to the process including tonymac, MacMan, blueking, tegezee, Mieze, Zenith432, kozlek, bcc9, BigDonkey, philip_petev, Mac4Mat, RehabMan and others who spend many hours messing with the technical details to make things run smoothly. Installing Snow Leopard on the HP Probook 4x30s series laptops is actually pretty easy (compared to other hacks you may attempt). So, open a new thread for your issue, or resolve your issue by reading the FAQ or doing a search. I do not want this thread to be one of those 25-page threads with a bunch of random questions in it. If you have an issue with your laptop after following this guide, please DO NOT reply to this thread. If you have an issue with this guide, please post a reply in this thread and I will try to address it with an edit (and then delete your post). Building a CustoMac Hackintosh: Buyer's Guide

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