HP Laptop Error Codes

Complete HP Laptop Guide

This guide explains all HP Laptop error codes (CH series) with simple troubleshooting steps to help you identify and fix common issues safely before calling a technician.

CPU Fan Error / cpu fan error
CPU Cooling Fan Failure
  • Turn off laptop immediately to prevent overheating.
  • Clean dust buildup from the cooling fan and vents.
  • Check if the fan spins freely without obstruction.
  • Replace the CPU fan if it is not functioning properly.
System Fan Failure / system fan failure
System Cooling Fault
  • Clean all air vents and internal cooling paths.
  • Check fan cable connections on the motherboard.
  • Run built-in hardware diagnostics tool.
  • Replace system fan assembly if failure persists.
GPU Fan Error / gpu fan error
Graphics Cooling Failure
  • Ensure GPU fan is not blocked by dust or debris.
  • Check temperature levels in BIOS or monitoring tools.
  • Inspect fan power connector.
  • Replace GPU cooling fan if it stops spinning.
Thermal Shutdown / thermal shutdown
Overheating Protection Activated
  • Turn off the laptop and allow it to cool completely.
  • Clean internal cooling system and vents.
  • Replace thermal paste if overheating continues.
  • Ensure proper airflow during usage.
Boot Device Not Found / boot device not found
No Bootable Drive Detected
  • Check BIOS boot order settings.
  • Ensure SSD or HDD is properly connected.
  • Run built-in storage diagnostics.
  • Reinstall operating system if drive is not detected.
Smart Hard Disk Error / smart hard disk error
Storage Failure Warning
  • Immediately back up important files.
  • Run SMART diagnostic check on the drive.
  • Check disk health using system utilities.
  • Replace failing HDD or SSD as soon as possible.
Cmos Checksum Error / cmos checksum error
BIOS Configuration Error
  • Load BIOS default settings.
  • Replace CMOS battery if required.
  • Update BIOS firmware carefully.
  • Save settings and restart system.
Bios Corruption / bios corruption
Firmware Integrity Failure
  • Attempt BIOS recovery mode.
  • Reflash BIOS using official tools.
  • Ensure stable power during update.
  • Replace motherboard if BIOS cannot recover.
Memory Error / memory error
RAM Malfunction Detected
  • Reseat RAM modules properly.
  • Run memory diagnostics test.
  • Clean RAM contacts carefully.
  • Replace faulty memory module if needed.
Memory Controller Error / memory controller error
System Memory Communication Fault
  • Restart the laptop and check stability.
  • Test RAM slots individually.
  • Update BIOS firmware.
  • Service motherboard if issue persists.
Overheating Warning / overheating warning
System Thermal Alert
  • Close heavy applications to reduce CPU load.
  • Clean internal fans and air vents.
  • Ensure laptop is placed on a hard, flat surface.
  • Replace thermal paste if overheating continues.
Battery Not Charging / battery not charging
Power Charging Failure
  • Check charger and power adapter connection.
  • Try a different wall outlet.
  • Inspect charging port for dust or damage.
  • Replace battery or charger if faulty.
Battery Health Critical / battery health critical
Battery Wear Warning
  • Run HP battery health diagnostics.
  • Avoid full discharge cycles frequently.
  • Update system BIOS and power drivers.
  • Replace battery if capacity is severely reduced.
No Bootable Device / no bootable device
Operating System Not Found
  • Check BIOS boot priority settings.
  • Ensure SSD/HDD is detected in BIOS.
  • Run startup repair or recovery mode.
  • Reinstall operating system if needed.
Operating System Not Found / operating system not found
Boot Failure Error
  • Verify storage drive is connected properly.
  • Check BIOS settings for boot device.
  • Run system recovery tools.
  • Reinstall OS if system files are missing.
Keyboard Not Responding / keyboard not responding
Input Device Failure
  • Restart the laptop and test keyboard again.
  • Check for stuck or damaged keys.
  • Update keyboard drivers.
  • Replace keyboard if hardware failure is confirmed.
Touchpad Not Working / touchpad not working
Pointer Device Error
  • Enable touchpad using function keys.
  • Update touchpad drivers in system settings.
  • Check BIOS settings for touchpad status.
  • Replace touchpad module if defective.
Display Failure / display failure
Screen Output Error
  • Check brightness settings and external display output.
  • Inspect display cable connection.
  • Test with external monitor.
  • Replace LCD panel if no display appears.
WiFi Not Working / wifi not working
Wireless Connection Failure
  • Restart router and laptop.
  • Enable WiFi adapter in settings.
  • Reinstall wireless drivers.
  • Replace WiFi card if hardware failure occurs.
Audio Not Working / audio not working
Sound System Failure
  • Check volume and mute settings.
  • Update audio drivers.
  • Test with external headphones.
  • Replace speakers if hardware is faulty.

Frequently Asked Questions


Why is my HP laptop not turning on?
Check if the charger is properly connected and the power outlet is working. Perform a hard reset by holding the power button for 15 seconds, then reconnect the charger and try again.
Why is my HP laptop running very slow?
Close unnecessary background programs, check for malware, and free up storage space. Updating Windows and drivers can also improve performance.
Why does my HP laptop keep freezing?
Too many running applications or insufficient RAM may cause freezing. Restart the laptop, update system software, and check for overheating issues.
Why is my HP laptop battery not charging?
Check the power adapter and charging port for damage. Try a different charger or outlet. Update battery drivers or replace the battery if needed.
Why is my HP laptop overheating?
Ensure vents are not blocked and clean dust from fans. Use the laptop on a flat surface and avoid heavy workloads for long periods.
Why is my HP laptop keyboard not working?
Restart the laptop and check keyboard settings. Update keyboard drivers or test with an external keyboard to confirm hardware failure.
Why is my HP laptop touchpad not working?
Enable the touchpad in settings or using function keys. Update drivers and check BIOS settings if the issue continues.
Why is my HP laptop not connecting to WiFi?
Restart the router and laptop. Enable WiFi adapter, update wireless drivers, and forget and reconnect to the network.
Why is my HP laptop screen blank or black?
Check brightness settings and external display connections. Perform a hard reset and test with an external monitor if needed.
Why is my HP laptop making loud fan noise?
Heavy CPU usage or dust buildup can cause fan noise. Close heavy apps and clean internal cooling vents if possible.
Why is my HP laptop not detecting storage drive?
Check BIOS settings to ensure the drive is detected. Run diagnostics and reseat or replace the SSD/HDD if necessary.
Why does my HP laptop keep restarting?
This may be caused by overheating, driver issues, or system corruption. Update Windows, check hardware, and perform system repair if needed.
Why is my HP laptop sound not working?
Check volume settings and audio output device. Update sound drivers and test with headphones to isolate the issue.
Why is my HP laptop camera not working?
Check camera permissions in settings. Update drivers and ensure no other app is blocking camera access.
How do I reset my HP laptop?
Go to Settings > Recovery and choose Reset this PC, or perform a hard reset by shutting down and restarting after 10–15 seconds.
Important: If the error code continues after troubleshooting, disconnect power immediately and contact a certified GE technician.