My laptop macbook pro has a problem with usb port they are not working.

hi there i have a late 2011 mac pro, its been 2 years of purhase however reary used, now it has a problem with usb port are drawing too much power and usb ports are dissabled from the system. now i can not use usb ports. do yo have solution for it??? cheers

Reset SMC.     http://support.apple.com/kb/HT3964
Choose the method for:
"Resetting SMC on portables with a battery you should not remove on your own".
Best.

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