Not sure what house button means--mouse button? Media direct is started with the media buttons on the front of the computer, not your mouse. Start the computer and press and hold down the main power button on the computer above the keyboard. Hold it down until the computer shuts off. Then wait a minute and then restart it to see what happens. If you still have problems, load your operating system disk in the drive and turn off and restart to boot from the cd and do a repair. To access the boot menu, press the F12 key at the very first screen. Your model might have different instructions for accessing the boot menu. Check your manual or watch the screen instructions.