Sony PSP-1006 K Instruction Manual page 122

The PSP™ system is not recognized by the PC when connected
using a USB cable.
, When using a USB hub or other devices, depending on the operating
environment of the PC, the Memory Stick Duo™ inserted in the system
may not be recognized by the PC. Try connecting the system directly to the
PC using a USB cable.
You forgot your password.
, You must restore the system settings to the settings at the time of purchase.
Once the settings are restored, the password will return to "0000" and you
can change the password (
default settings, as you will not be able to recover your current settings for
photo, video and other "Settings" options. For details see "Restore Default
Settings" (
122 Troubleshooting
page 91). Use caution when restoring the
page 85) and "Settings for the PSP™ system" ( page 80).