ProCurve 420 Installation And Getting Started Manual page 67

To execute the factory default reset on the access point, perform these steps:
1. Using a pointed object, press and hold the Reset button on the back of the
access point for 5-10 seconds. On the console display, the cursor will move
down to the next line, indicating that the factory defaults have been
reloaded.
2. Release the Reset button.
The access point 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
reset configuration command from the console command prompt.
Troubleshooting
Restoring the Factory Default Configuration
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