Steam deck won’t boot
Worked fine last night, now fan just runs and won’t boot. Tried all the suggestions with volume and power button, unplugged to run battery out and still a black screen with cycling fan. (OLED)
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This community might be of more help: https://steamhost.cn/steamcommunity_com/app/1675200/discussions/
Here are a few things worth trying:

1. Force Shutdown and Restart

Hold the power button for at least 16 seconds to force a hard shutdown. Then try powering it back on

2. Enter BIOS Menu

With the device off, hold Volume Up (+) and then press the Power button. Keep holding Volume Up until you (hopefully) see the BIOS screen. If you see the BIOS, select "Continue" to try booting into SteamOS

3. Battery Storage Mode Reset

Plug in the charger.

Hold Volume Up (+) and the “...” (three-dot) button for about 10 seconds.

While still holding both buttons, unplug the charger.

Wait for the LED to blink three times, then release the buttons.

Plug the charger back in and try powering on again

4. External Display Test

Connect your Steam Deck to a TV or monitor via USB-C. If you get a signal, the issue may be with the OLED screen or its connection


5. Let the Battery Fully Drain

Leave the Deck unplugged until the fan stops and the LED goes dark (could take a day or longer). Then plug it in and try powering on. This can reset power management settings
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