Did you do the following:
To execute the factory default reset on the switch, perform these steps:Using pointed objects, simultaneously press both the Reset and Clear buttons on the front of the switch.
Continue to press the Clear button while releasing the Reset button.
When the Self Test LED begins to blink, release the Clear button.
The switch will then complete its self test and begin operating with its configuration restored to the factory default settings.
To restore the factory default configuration using the console, execute the erase startup-config command from the console command prompt.
You will lose the current config ofcourse. If the clear/reset button has been disabled you can ask support to unlock it.