So here's the deal. A friend of mine bought a used macbook, and HIS friend decided it would be a good idea to wipe osx and put windows 7 on the macbook. I have no idea how he got it to work, but here I am, surfing the interwebs.
The problem: My friend wants osx back on his laptop. Audio and the webcam dont work, so he wants to revert to the old setup. But I have no idea how. I have tried holding c when starting the laptop, but after jumping into the mac installer, an error pops up saying mac osx cant be installed. I think the way to do it is to wipe windows 7, then install mac osx, but I'm not sure it will work and not looking forward to a black plastic brick.
Any suggestions how I go about this? How do I wipe windows 7? Why is there an error message saying I cant install osx?