2 USB don't Work!

Hi to all!

I have a problem with my mid-2009 2.66 GHz A1286 MB985LL / A.

It starts and runs fine, except the two USB ports!

I have an error message that tells me a USB port so he drank too cut ...

But nothing is plugged into USB !!

I have reset PRAM and SMC

Always the same!

The mother board is in really good condition I disassembled to properly annalyser Loan and there is obviously nothing wrong

Can someone help me