Just the steam boot logo. Fresh install onto ASRock Z77 Extreme Intel i5

[wesaraw]

Your system information?

• Steam client version:
• SteamOS version: 2.195?
• Opted into Steamclient beta?: [Yes/No] Yes
• Opted into SteamOS beta?: [Yes/No] Yes
• Have you checked for updates in Settings > System?: [Yes/No]

Please describe your issue in as much detail as possible:

This is the first time using the SteamOS. I just installed SteamOS onto my USB drive, it functioned for about 2 minutes until I connected the LAN cable and steam downloaded. Then the computer restarted and the only thing that happens now is the steam logo is showed in the middle of the screen and nothing else. I cant prompt anything with my keyboard.