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- HP Community
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- Omen 40L desktop crash after idle for a little while

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02-21-2024 08:46 PM
My HP 40L Desktop PC keeps crash (loud fan, then black screen with beeps) after idle for a little while (several minutes). What is the cause? How to solve it?
02-24-2024 11:10 AM
Hi @pikapika11,
Welcome to HP Support Community.
Thank you for posting your query, I will be glad to help you.
The issue you're experiencing with your HP Omen 40L desktop PC involves the system crashing after being idle for a period, accompanied by a loud fan noise, then a black screen with beeps. This type of problem can be caused by various issues, ranging from hardware to software. Here are some potential causes and solutions:
1. Overheating
- Cause: If the fans become loud before the crash, it might indicate the PC is overheating. Dust build-up, a malfunctioning fan, or poor ventilation can cause overheating.
- Solution: Clean the inside of your PC to remove dust, especially from the fans and heatsinks. Ensure your PC has good ventilation. Check if all fans are working correctly.
2. Power Supply Issues
- Cause: A failing power supply unit (PSU) might not provide adequate power, causing the system to crash.
3. Hardware Failure
- Cause: Components like RAM, the graphics card, or the motherboard might be failing.
- Solution: Run hardware diagnostics to check the health of your components. HP provides built-in diagnostics (HP PC Hardware Diagnostics) that you can access by pressing F2 during startup. Pay attention to the beep codes after the crash, as they can indicate which hardware might be failing.
4. BIOS/UEFI Settings
- Cause: Incorrect BIOS/UEFI settings, especially regarding power management, can cause issues.
- Solution: Reset your BIOS/UEFI settings to default. Turn on the computer, and then press f10 repeatedly to enter BIOS. Under the Main tab, use the up and down arrow keys to select Restore Defaults, and then press enter. Click Yes to load the default settings. Under the Main tab, use the up and down arrow keys to select Save Changes and Exit, and then press enter.
5. Software or Driver Issues
- Cause: Outdated or corrupted drivers can lead to system instability.
- Solution: Update all drivers, especially the graphics card and chipset drivers. Also, ensure your operating system is up to date. Click here
6. Sleep Mode Issues
- Cause: Sometimes, the issue is related to how the computer enters or exits sleep mode.
- Solution: Adjust the power settings in Windows. You can disable sleep mode temporarily to see if it resolves the issue.
Steps to Diagnose:
- Listen to the Beep Codes: The pattern of beeps after the crash can help diagnose the issue.
- Check Event Viewer: Windows Event Viewer might have logs that can help identify the cause. Look for critical errors or warnings around the time of the crashes.
- Safe Mode: Try running your PC in Safe Mode to see if the issue persists. If it doesn't, the problem might be related to software or drivers.
I hope this helps.
Take care and have a good day.
Please click “Accepted Solution” if you feel my post solved your issue, it will help others find the solution. Click the “Kudos/Thumbs Up" on the bottom right to say “Thanks” for helping!
Rachel571
HP Support
Sneha_01- HP support