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- HP Community
- Notebooks
- Notebook Operating System and Recovery
- Re: Boot,Black screeen, Lag issue

Create an account on the HP Community to personalize your profile and ask a question
12-04-2025 09:36 PM
When i open my laptop always it take too much time to open and then before enter password on welcome screen it get stock for tooo much time and then a black screen appears with mouse corsor for few second and then the system runs with too lag for several times. How i fix it can someone help me.Blackscreen
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Accepted Solutions
12-14-2025 09:04 AM
To update HP PC Hardware Diagnostics UEFI, download the latest version directly from HP’s official support page here: HP PC Hardware Diagnostics. This tool helps test hardware outside the operating system and is essential for diagnosing persistent boot and lag issues.
How to Update HP PC Hardware Diagnostics UEFI
Visit the official HP diagnostics page
- Go to: https://support.hp.com/us-en/help/hp-pc-hardware-diagnostics
- Scroll down to the section titled “HP PC Hardware Diagnostics UEFI.”
- Click the download link for the latest version.
Prepare a USB drive
- Use a blank USB drive with at least 2 GB capacity.
- The installer will create a bootable diagnostics tool on the USB.
Run the installer
- Launch the downloaded file and follow the prompts to install the UEFI diagnostics to your USB drive.
- Once complete, restart your laptop and press F2 repeatedly to enter the diagnostics menu.
- The updated version will load from the USB.
Check version after update
- After booting into diagnostics, the version number will appear at the bottom of the screen.
- Confirm it’s newer than 10.8.0.0.
Why This Matters for Your Case
Since you’ve already reduced the frequency of black screens and lag, but slow boot persists, updating the UEFI diagnostics ensures you’re testing with the most accurate tools. The latest version may include improved checks for storage health, memory integrity, and boot path delays.
If the updated diagnostics show no hardware faults, the remaining cause may be tied to:
- Corrupted user profile: Try creating a new local account and test boot speed.
- Startup service delays: Use Task Manager > Startup tab and disable all non-essential entries.
- Storage performance: If using a traditional HDD, consider upgrading to SSD for faster boot.
Let me know if you’d like a step-by-step guide to create a new user profile or test storage speed using built-in Windows tools.
Thanks,
Hawks_Eye
I'm an HP Employee.
If this reply helped resolve your issue, please select the Accept as Solution as it helps others in the community quickly find the answer they’re looking for.
And if you found this reply helpful, clicking Yes below is a great way to let us know we’re providing the support you need, as it encourages us to keep improving and sharing helpful guidance.
12-07-2025 05:35 AM
Welcome to the HP Support Community! We're here to help you get back up and running.
To resolve the slow boot, black screen with cursor, and lag issues on your HP laptop running Windows 11, start by disabling unnecessary startup apps, updating graphics drivers, and checking system integrity.
I understand how frustrating it feels to wait through delays and black screens just to reach your desktop, especially when the system continues to lag afterward.
You’ve already shown patience by observing the exact behavior, which helps us target the root causes.
Step-by-Step Troubleshooting Guide
1. Disable Unnecessary Startup Apps
- Press Ctrl + Shift + Esc to open Task Manager.
- Go to the Startup tab.
- Right-click and disable any apps you don’t need at startup (especially third-party utilities or background services).
2. Update Graphics Drivers
- Press Windows + X and select Device Manager.
- Expand Display adapters, right-click your graphics device, and choose Update driver > Search automatically.
- If you use AMD or NVIDIA, visit their official site for the latest drivers.
3. Run System File Checker
- Press Windows + S, type Command Prompt, right-click and choose Run as administrator.
- Type: sfc /scannow and press Enter.
- Let the scan complete and follow any prompts to repair system files.
4. Check for Windows Updates
- Go to Settings > Windows Update.
- Install all pending updates, including optional ones.
- Restart and observe boot behavior.
5. Turn Off Fast Startup
- Open Control Panel > Power Options > Choose what the power buttons do.
- Click Change settings that are currently unavailable.
- Uncheck Turn on fast startup and save changes.
- Restart the system.
6. Run HP Hardware Diagnostics
- Download and install HP PC Hardware Diagnostics – Windows:
HP PC Hardware Diagnostics Windows - Run the System Test and Component Test > Memory and Storage.
- This helps confirm if lag is caused by hardware degradation.
7. Check for Background Services
- Open Settings > Apps > Startup and disable any cloud sync, game launchers, or analytics tools.
- Also check Settings > Privacy & Security > Background apps and turn off anything unnecessary.
Additional Considerations
- Black screen with cursor often indicates delayed loading of explorer.exe. If it persists, press Ctrl + Shift + Esc, go to File > Run new task, type explorer.exe, and press Enter.
- If the system remains slow after login, consider creating a new local user profile to test whether the issue is tied to your current account.
You’ve already shown great attention to detail by describing the exact boot sequence. With these steps—especially disabling fast startup, updating drivers, and running diagnostics—you’ll be able to restore smooth performance and eliminate the black screen delay.
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
I'm an HP Employee.
If this reply helped resolve your issue, please select the Accept as Solution as it helps others in the community quickly find the answer they’re looking for.
And if you found this reply helpful, clicking Yes below is a great way to let us know we’re providing the support you need, as it encourages us to keep improving and sharing helpful guidance.
12-12-2025 09:43 AM
Thanks for the solutions. Sorry to say but i have tried all the steps you mentioned above. Only the lag problem and the black screen with cursor was less frequent now, probably 3/7 times it happened. And the slow boot is always happened. Whats the actual problem i can't understand. By the way can to help me how can i update my HP PC Hardware Diagnostics UEFI, it shows the version 10.8.0.0 whats the latest version can you provide me the official download link i tried but i can't.
12-14-2025 09:04 AM
To update HP PC Hardware Diagnostics UEFI, download the latest version directly from HP’s official support page here: HP PC Hardware Diagnostics. This tool helps test hardware outside the operating system and is essential for diagnosing persistent boot and lag issues.
How to Update HP PC Hardware Diagnostics UEFI
Visit the official HP diagnostics page
- Go to: https://support.hp.com/us-en/help/hp-pc-hardware-diagnostics
- Scroll down to the section titled “HP PC Hardware Diagnostics UEFI.”
- Click the download link for the latest version.
Prepare a USB drive
- Use a blank USB drive with at least 2 GB capacity.
- The installer will create a bootable diagnostics tool on the USB.
Run the installer
- Launch the downloaded file and follow the prompts to install the UEFI diagnostics to your USB drive.
- Once complete, restart your laptop and press F2 repeatedly to enter the diagnostics menu.
- The updated version will load from the USB.
Check version after update
- After booting into diagnostics, the version number will appear at the bottom of the screen.
- Confirm it’s newer than 10.8.0.0.
Why This Matters for Your Case
Since you’ve already reduced the frequency of black screens and lag, but slow boot persists, updating the UEFI diagnostics ensures you’re testing with the most accurate tools. The latest version may include improved checks for storage health, memory integrity, and boot path delays.
If the updated diagnostics show no hardware faults, the remaining cause may be tied to:
- Corrupted user profile: Try creating a new local account and test boot speed.
- Startup service delays: Use Task Manager > Startup tab and disable all non-essential entries.
- Storage performance: If using a traditional HDD, consider upgrading to SSD for faster boot.
Let me know if you’d like a step-by-step guide to create a new user profile or test storage speed using built-in Windows tools.
Thanks,
Hawks_Eye
I'm an HP Employee.
If this reply helped resolve your issue, please select the Accept as Solution as it helps others in the community quickly find the answer they’re looking for.
And if you found this reply helpful, clicking Yes below is a great way to let us know we’re providing the support you need, as it encourages us to keep improving and sharing helpful guidance.