My pc once in a while (sometimes multiple times in a row) shuts down on itself

[Giovanni_Mang]

My pc once in a while (sometimes multiple times in a row) shuts down on itself: it first appears a black screen with a white writing starting with: 0% (I cannot read the rest since it appears only for a moment). Could someone tell me what can I do? Thanks

[Hawks_Eye]

Hi @Giovanni_Mang 

Welcome to the HP Support Community! We're here to help you get back up and running.

Thanks for describing the issue so clearly—it sounds deeply disruptive, especially when it happens multiple times in a row. That brief black screen with white text starting at “0%” is likely part of a Windows crash dump or shutdown sequence, possibly triggered by a critical system error or overheating.

Here’s a step-by-step guide to help you stabilize your HP Envy x360 16-ac0000:

 

1. Check for Overheating

Sudden shutdowns are often caused by thermal protection kicking in:

• Make sure vents are clear and the laptop is on a hard surface.
• Use HP Command Center to switch to Cool Mode.
• You can download it here:
  HP Command Center

 

2. Run HP Hardware Diagnostics

This will check for hardware faults:

• Shut down your laptop.
• Press Esc repeatedly, then F2 to enter diagnostics.
• Run System Tests → Extensive Test and pay attention to Thermal and Memory results.

 

3. Update BIOS and Drivers

Outdated firmware can cause instability:

• Visit the official support page:
  HP Envy x360 16-ac0000 Drivers & Downloads
• Install:
  • Latest BIOS
  • Chipset Drivers
  • Graphics Drivers
  • HP System Event Utility

 

4. Check Windows Reliability Monitor

This tool shows crash history:

• Press Win + R, type perfmon /rel, and hit Enter.
• Look for red Xs on the timeline—click them to see error details.

 

5. Disable Fast Startup

Sometimes this feature causes erratic shutdowns:

• Go to Control Panel → Power Options → Choose what the power buttons do.
• Click Change settings that are currently unavailable.
• Uncheck Turn on fast startup.

6. Scan for Corrupted System Files

Run these commands in Windows Terminal (Admin):

sfc /scannow

Then:

DISM /Online /Cleanup-Image /RestoreHealth

If the issue persists after these steps, it may be worth checking whether any recent updates or third-party apps are triggering the crash. Let me know what you find in Reliability Monitor or Diagnostics—I’ll help interpret the results.

If my response helped, please mark it as an Accepted Solution! ✅ It helps others and spreads support. 💙 Also, tapping "Yes" on "Was this reply helpful?" makes a big difference! Thanks! 😊

Take care, and have an amazing day!

Regards, 

Hawks_Eye

[Giovanni_Mang1]

Hey, thank you very much. Unfortunately I could not try your instructions in time since my pc now does only this:

 And then when running diagnsotics the only failed test is this:

 How can I do? Thanks in advance

[Hawks_Eye]

We sincerely thank you for your patience and co-operation during this troubleshooting process.

It looks like we may have to raise a service order for the same. 
 

These requests are best addressed over the phone with our dedicated support team for your region. 

I'm sending you a private message to guide you on the next steps.

To access it, click the private message icon in the upper-right corner of your HP Support Community profile, next to your name.

If this resolves your issue, kindly mark this post as "Accepted Solution" and click "Yes" if it was helpful.

Take care and have a great day!

Regards,

Hawks_Eye