Pourquoi mon PC se redémarre automatiquement

The Event ID 41, Source "Microsoft-Windows-Kernel-Power", indicates that your HP 14s-dq0000 Series PC restarted without a clean shutdown. This event is a general error that basically says "the computer lost power or shut down unexpectedly." It doesn't tell you why it happened, only that it did happen.

Let's break down the possible causes and troubleshooting steps for your "Pourquoi mon PC se redémarre automatiquement" issue.

Understanding Event ID 41 (Kernel-Power)

• BugcheckCode 0: This is important. If there were a specific Blue Screen of Death (BSOD) error, the BugcheckCode would be a non-zero value. A BugcheckCode 0 indicates that the system didn't generate a bugcheck. This often points towards a power-related issue or a complete system freeze that prevented a proper shutdown or error logging.

• SleepInProgress 0: The computer was not in a sleep state.

• PowerButtonTimestamp: This timestamp corresponds to when the system lost power.

Common Reasons for Automatic Restarts (with Kernel-Power Event 41 and BugcheckCode 0):

• Power Supply Unit (PSU) Issues:

• Faulty PSU: The power supply might not be delivering stable power to all components, leading to sudden shutdowns.

• Insufficient PSU wattage: If you've upgraded components (like a graphics card) without upgrading the PSU, it might be struggling to provide enough power. (Less likely for a laptop, but still a possibility if the internal power board is failing).

• Loose power connection: The power cable to the laptop or the AC adapter itself might be faulty or not securely connected.

• Overheating:

• Dust buildup: Accumulation of dust in the fans and heatsinks can prevent proper cooling, causing the CPU or GPU to overheat and trigger a shutdown to prevent damage.

• Failing fans: Laptop fans can degrade over time, leading to reduced cooling efficiency.

• Thermal paste degradation: The thermal paste between the CPU/GPU and their heatsinks can dry out and become less effective at transferring heat.

• Driver Issues:

• Corrupted or incompatible drivers: Especially graphics drivers, chipset drivers, or power management drivers can cause system instability leading to unexpected reboots.

• Hardware Failure (other than PSU):

• Faulty RAM (Memory): Bad RAM modules can lead to unpredictable behavior, crashes, and reboots.

• Motherboard issues: Problems with the motherboard components can cause power delivery issues or general instability.

• Hard Drive/SSD issues: While less common to cause direct reboots without a BSOD, a failing drive can sometimes lead to system unresponsiveness that results in a forced restart.

• Corrupted Windows System Files:

• Essential Windows files can become corrupted due to malware, improper shutdowns, or disk errors, leading to instability.

• Malware/Virus:

• Malicious software can sometimes cause system instability or forced reboots.

• BIOS/UEFI Issues:

• An outdated or corrupted BIOS/UEFI can sometimes cause unexpected behavior.

Troubleshooting Steps for your HP 14s-dq0000 Series:

Given the BugcheckCode 0, we'll focus on hardware and power first.

Part 1: Initial Checks & Software Solutions

• Check Power Connections:

• Ensure the AC adapter is securely plugged into your laptop and the wall outlet.

• If possible, try a different wall outlet.

• If you have another compatible HP AC adapter, try using that to rule out a faulty adapter.

• Check for Overheating:

• Listen to the fans: Are they running loudly or constantly, even under light load?

• Feel the laptop: Is it excessively hot to the touch, especially on the bottom or near the vents?

• Clean the vents: Use compressed air to blow out any dust from the vents on the side and bottom of your laptop. Do this while the laptop is off.

• Monitor temperatures: Download a tool like HWMonitor or Speccy to monitor your CPU and GPU temperatures. Run it, then perform a task that usually triggers the restart (if you can identify one) and observe the temperatures. If they consistently go above 85-90°C, overheating is a likely cause.

• Update Drivers:

• Graphics Drivers: Go to the official HP support website for your specific HP 14s-dq0000 series model. Download and install the latest graphics drivers (Intel, and if applicable, NVIDIA/AMD).

• Chipset Drivers: Also download and install the latest chipset drivers from HP's website.

• BIOS/UEFI Update: Check the HP support website for a BIOS update. Follow HP's instructions carefully for updating the BIOS, as an improper update can brick your laptop.

• Run System File Checker (SFC) and DISM:

• Open Command Prompt as Administrator.

• Type sfc /scannow and press Enter. Let it complete. This will check for and repair corrupted Windows system files.

• After SFC, type the following commands one by one, pressing Enter after each:

• DISM /Online /Cleanup-Image /CheckHealth

• DISM /Online /Cleanup-Image /ScanHealth

• DISM /Online /Cleanup-Image /RestoreHealth

• These DISM commands help repair the Windows image itself.

• Check for Malware:

• Run a full scan with Windows Defender or your preferred antivirus software.

Part 2: Hardware Related Troubleshooting (More Advanced)

If the above steps don't resolve the issue, it points more strongly to a hardware problem.

• Test RAM (Memory):

• Windows has a built-in Memory Diagnostic Tool. Search for "Windows Memory Diagnostic" in the Start menu, run it, and choose to restart and check for problems. This will run a scan after rebooting.

• If you have multiple RAM sticks and are comfortable opening your laptop, you could try removing one stick at a time and testing to see if the restarts stop. This helps identify a faulty stick. (Consult an HP service manual or a professional if unsure).

• Hard Reset (Power Drain):

• Shut down the laptop completely.

• Disconnect the AC adapter.

• If your battery is removable, remove it. (For many HP 14s models, the battery is internal and requires opening the case. If you're not comfortable, skip this part).

• Press and hold the power button for 30-60 seconds.

• Reconnect the AC adapter (and battery if removed).

• Power on the laptop. This can sometimes clear residual charge that might be causing issues.

Part 3: When to Seek Professional Help

• If the problem persists after trying all the above steps.

• If you're not comfortable opening your laptop to clean fans or access internal components.

• If you suspect a power supply or motherboard issue, as these require specialized tools and expertise to diagnose and repair.

• If your laptop is still under warranty, contact HP support immediately. Trying to fix it yourself might void the warranty.

Given that BugcheckCode 0 indicates no specific crash dump was created, focus heavily on power stability, overheating, and potentially RAM issues. Good luck!