No USBs work in Mac OS X work fine in Windows.

I installed Windows a few months ago using Boot Camp, and everything has worked fine since. However, a few days ago, I was not able to use my mouse or keyboard, or any USB port, when it booted into Mac OS X. The weird thing is I can still hold option and select what to boot into. If I choose windows, everything is peachy, but when I choose Mac, the USBs don't work. Any ideas or suggestions? I am willing to try anything. Thanks.

Got wired keyboard handy?
Zap PRAM/NVRAM - command + option + p + r from a cold boot, and continue to hold while it restarts automatically one or two more times and then release.
You'll need to reset the default startup disk control panel and use the Option key probably the first time after you release the four keys.
Being hardware and not likely the OS or its packages that even bad permissions would cause a problem. Resetting the SMC or system power management controller, yes.

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