499 Views 1 Reply Latest reply: May 21, 2012 8:10 AM by KRB52
Problem resolved....after I found this post...Thanx to BGregRe: usb ports on macbook pro not working? plz help
Have you reset the SMC and PRAM?
SMC Reset: http://support.apple.com/kb/HT3964
- Shut down the computer.
- Locate the following keys on the keyboard: Command, Option, P, and R. You will need to hold these keys down simultaneously in step 4.
- Turn on the computer.
- Press and hold the Command-Option-P-R keys. You must press this key combination before the gray screen appears.
- Hold the keys down until the computer restarts and you hear the startup sound for the second time.
- Release the keys.