HP (Hewlett-Packard) 2307890A ユーザーズマニュアル

Gently turn the HP Digital Entertainment Center right 
side up.

Reconnect all cables to the HP Digital Entertainment 
Center. Reconnect the power cable last.

Turn on the HP Digital Entertainment Center.

Test the HP Digital Entertainment Center for proper 
operation.

Recover your system using the recovery disk.

Restore your data.