Surface Laptop Studio 1 - No POST / Dead after standard shutdown.

Hi everyone,

I am looking for a "miracle" solution or a hardware diagnosis for my **Microsoft Surface Laptop Studio 1** before I send it in for a standard exchange (and lose my data).

**The Incident:**

My Surface was working perfectly until yesterday. I was having network driver issues (ERR_TIMED_OUT) possibly related to an antivirus (AVG).

I decided to shut down the computer properly via the Windows Start menu (Trackpad -> Shut Down).

The screen showed the "Apps are preventing shutdown" warning, listing AVG. I intended to cancel, but before I could click anything, Windows proceeded to force the shutdown automatically.

It seemed like a standard, safe software shutdown. However, since that moment, the device refuses to turn on. It is completely black and unresponsive.

**The Symptoms:**

• **Screen:** Black. No backlight.

• **Keyboard:** No backlight. Tapping Caps Lock or Fn does NOT light up the keys.

• **Fans:** Completely silent.

• **Surface Connect Charger:** When plugged in, the **LED turns solid White** (indicating it detects the device).

• **CRITICAL SYMPTOM:** When I plug my smartphone into the Surface's USB-C ports to test them, **my phone does not charge**. The ports seem to have no power output.

**What I have already tried (Multiple times):**

1. **Force Restart:** Held Power button for 30s, 60s.

2. **Two-Button Reset:** Held Power + Volume UP for 15-20s (also tried Power + Volume DOWN just in case).

3. **Keyboard Wake:** Tried Win + Ctrl + Shift + B.

4. **Bypassing the Charger:** I tried charging the laptop via the USB-C ports using a 100W PD Charger (MacBook/Anker grade). No reaction.

5. **"Pulsing" Power:** Pressing power rapidly 5-10 times.

6. **Long Press:** Held the power button down for 2 full minutes.

**My Analysis:**

Since the official charger LED is on, the device is receiving power physically. However, the fact that the USB-C ports are dead (not charging my phone) and the Keyboard is dead suggests the motherboard isn't initializing the power rails (No POST).

It feels like the Embedded Controller (EC) is stuck in a "Safe Mode" or a freeze state following the software shutdown.

**My Questions:**

1. Since this happened after a Windows "Fast Startup" shutdown (hibernation file creation), is there a way to force a clear CMOS/EC reset without opening the chassis?

2. Does the fact that the USB-C ports are dead confirm a motherboard failure?

3. I am currently in Tokyo and have important data on the drive. Is there *any* way to revive it just enough to pull data?

Any help would be massively appreciated!