Angel73

[Angelito73]

A36Y7ET#ABE When watching a long YouTube video, the screen eventually goes black and locks the laptop.

[Samrit26]

Hello,

Got it. I’ll treat this like an internal escalation note and mentor you through it properly.

Product: A36Y7ET#ABE
(This is an HP commercial notebook, AMD-based SKU for EMEA)

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What the symptom tells me (important)

“When watching a long YouTube video, the screen eventually goes black and locks the laptop.”

This pattern is not random. When it happens only after extended video playback, it almost always points to one of these layers:

1. GPU power-state transition issue (very common on AMD-based HP systems)

2. Modern Standby / sleep lock triggered by display driver

3. Browser hardware acceleration + video decode bug

4. Thermal or VRAM timeout event (screen goes black but system is still “on”)

This is not a panel failure and not basic hardware damage.

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First checks I need from you (before final diagnosis)

Please confirm:

1. Operating system (Windows 10 or Windows 11, exact version)

2. Does audio continue briefly when screen goes black, or does everything freeze?

3. Does the keyboard backlight stay on?

4. Does it recover by itself, or only with a power-button hold?

These answers decide whether this is driver, power policy, or firmware.

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What I would do immediately (safe, supported steps)

Step 1 – Update BIOS (mandatory)

Long-playback black-screen issues are often fixed at EC/BIOS level.

1. Go to HP Support → A36Y7ET

2. Install the latest BIOS

3. AC adapter connected

4. Do not interrupt

Why:
The Embedded Controller controls GPU sleep/wake thresholds during media playback.

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Step 2 – Clean GPU driver install (do NOT use Windows Update)

HP AMD platforms are sensitive to driver mismatches.

1. Uninstall AMD Adrenalin (if installed)

2. Download HP-provided AMD graphics driver only

3. Install → reboot

Why:
Generic AMD drivers often break HP power tables.

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Step 3 – Disable hardware acceleration (quick isolation test)

This confirms if video decode is the trigger.

In your browser (Chrome / Edge / Firefox):

• Settings → Advanced

• Disable Hardware Acceleration

• Restart browser

• Test long YouTube playback again

If the issue disappears → GPU decode path confirmed.

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Step 4 – Power & sleep behavior (very important)

1. Windows Power & Sleep settings

2. Disable:

   • Screen off during playback

   • Sleep while plugged in

3. If Windows 11:

   • Check Modern Standby behavior

Why:
Modern Standby + AMD + video playback is a known weak point.

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What this is NOT

• ❌ Not a bad LCD panel

• ❌ Not a YouTube issue

• ❌ Not RAM failure

• ❌ Not malware

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If the issue persists after the above

At that point, we look at:

• Thermal logs

• Event Viewer → Display / Kernel-Power events

• Possible mainboard GPU rail instability

For HP commercial notebooks:
➡️ If confirmed hardware-related, depot repair is the only option
(no field repair for GPU power rails)