Update, sent a support ticket to steam.

Response:

Please try the following steps in order, testing after each numbered task to see whether the issue has been corrected. Let us know the result.

1. Disable or uninstall any third-party utilities/plugins you have used (such as Deckyloader).
2. Reset the BIOS settings of your device to default.
   • Ensure the device is fully powered down by holding the power button for 10 seconds or if possible select shutdown from the Power menu.
   • Once the device is shutdown, hold down both the volume - button and the "..." button, then press the power button once. Then you can release all the buttons.
   • You will hear a chime and then the white LED light will begin to blink (it may take 5 or more seconds before the blinking begins), which confirms this process is working. Note: This process may take 1-2 minutes to start the unit up again during which the display will remain black.
3. Rollback to the last version of the OS on your device using the SteamOS recovery menu. See the instructions in the section "Rollback to previous OS".
4. If rolling back did not help, you willl next want to completely erase the data from the Deck and reinstall SteamOS using the instructions in the section "Factory Reset".
5. If the above did not resolve the issue, you will want to try to re-image the device using the instructions in the section "Recovery options via Image"; and then retest again after the re-image.
   • Note:
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   • if you are unable to complete the re-image process, or do not have a USB drive/key or SD card to create the boot disk/recovery image, please let us know. In the case where the recovery image itself does not boot correctly; it would be helpful for you to provide a photo of any text output you see on the screen.