Chosen Solution
A few days after out of warranty both USB ports quit working. Apple replaced the motherboard for a one time customer favor. The USB ports worked for a few days, then quit; they have not worked since. I have tried clearing PRAM, SMC, reloading OS from scratch, cleaning the ports with Isopropyl alcohol with no luck. I never received the over power notice and the only things that have been put in them are a mouse, usb hard drive for time machine, and thumb drives. The only thing I have found are the fuses might be blown but a new mb is 1,000 plus. Really do not use it and would like to sell it, but with the USB ports not working, I think that will prohibit it’s selling. Any ideas would be appreciated.
When more than 1 USB port is not working, the issue may come either from the controllers that manage the USB’s Power/Data lines or the MCP (The main chipset), or maybe both fuses are burnt (very unlikely). The best thing you could do is probably seeking for a free quote from a shop in your area. I would recommend taking it to a shop that you fully trust, because your board is definitely fixable at this point.
