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I'm having trouble upgrading my system to Mavericks. When I try upgrading directly on the drive itself I get the "This copy of the Install OS X Mavericks application can't be verified. It may have been corrupted or tampered with during downloading." This is the second time I tried downloading...

Having a problem with my Mavericks (10.9.3) machine. I kept having troubles with my computer occasionally locking up (completely unresponsive to any force-quit and mouse wouldn't move, etc). This is not even running intensive programs, sometimes happened just up startup or opening Firefox...

I finally got Mavericks running and it boots off the drive with no Boot0 error. However, now there is no audio or any input/output devices detected. I made sure the audio codec was compatible with the motherboard (Z87 UD5H-- used ALC 898 and HDAEnabler without DSDT). The problem is I have no...

So I'm building my first Hackintosh and I can't seem to find a solution to this problem. I'm trying to do a clean install of Snow Leopard with iBoot Haswell and keep getting the ACPI error. :banghead: I've changed the settings to default and looks at some others' working setting in BIOS. The...