Xbox 360 System
Turn on the Xbox 360 while holding A to remove old cache files from the hard drive. Note: Your saved games and media will stay intact, however downloaded game updates will be deleted. They can be restored by playing the game again while Xbox Live enabled.
Enter the "System" menu and select the "Memory" option. Highlight the hard drive, then press Y. The Device Options screen for the hard drive will appear, with "Rename" and "Format" options. Press X(2), LB(2), X(2) to clear the cache. Alternately, enter the "System" menu and select the "Memory" option. Press Y for device options, then press either LB, RB, X(2), LB(2), X(2) or X(2), LB, RB, X(2), LB, RB. You will get a message stating that the system is performing maintenance.
In backwards compatible games, music can be played. Before playing the game, while still on the Dashboard, go to "Music". Select the music you want to play and put it on shuffle or continuous play. Then, load the Xbox game. Even though the guide cannot be opened, the music will still play. This works best with an iPod.
Note: Your PSP must have photos on it. Plug your PSP into the USB ports on the bottom of the system. On the PSP, select the "USB Connection" option. On the Xbox 360, go to the "Media" slide and choose "Pictures". Then, select the "Portable" option. Go into the PSP file and the photos file. Any photos on your PSP should appear here. Once you find the picture you want to be your background, press X. If done correctly, the background on all slides should appear to have the picture on it.
If you have a Media Center PC, connect it to the Xbox 360. Then, go to the picture files on the computer using the Xbox 360. Any picture can be used as a background by pressing X.
The Xbox 360 media center remote can be use to control Media Center PCs. While someone has an application such as Word, Notepad, or Explorer open, press Up, Down, Left, or Right on the remote. Whatever they are doing will either scroll or move in that direction.