Go to VM Settings, in System change chipset to PIIX3.Remember the name you give to the VM and do not start it after creation.
Virtualbox: This virtualization suite is free, and though it doesn't offer official support for Mac OS X, it works well enough. Give your new virtual machine a name (I just called it “Mac OS X”) and set the operating system to “Mac OS X Server (64-bit)”. Here’s what you need to do: Step 1: Launch VirtualBox and click the New button.
Before we install OS X, we’ll need to set up VirtualBox so the OS X install disc can boot correctly. iAtkos ML2: Unfortunately, the standard method for installing OS X Mountain Lion on PCs (which uses a paid copy of the Mountain Lion installer) doesn’t work with Virtualbox. Virtualbox: This virtualization suite is free, and though it doesn’t offer official support for Mac OS X, it works well enough.