Computer Repair
PC Hardware Failures

🔧 Common PC Hardware Failures and How to Repair Computer

Here’s a breakdown of the most common computer hardware failures, how they typically show up and a practical guide to fixing each of the common PC hardware failures, including both quick fixes and deeper solutions so you can troubleshoot confidently, without taking your PC Laptop to a Computer repair shop or call a computer technician. You can do Repair Computer yourself easily by following these steps.

1. 🔧 Computer Repair - Overheating

• Computer Overheating Symptoms: Random Computer shutdowns, loud fan noise, hot casing, sluggish computer performance.

• Causes of Computer Overheating: Dust buildup, poor ventilation, failing fans, dried thermal paste.

• Risks of Computer Overheating: Can damage CPU, GPU, or motherboard of your Computer over time.

• How to Repair Computer Overheating: This is very simple to fix. No need to take your PC to a computer shop or call a computer technician.
  

  • Clean dust from fans, vents, and heatsinks using compressed air.

  • Reapply thermal paste on CPU/GPU if it’s dried out.

  • Improve airflow: reposition PC, add case fans, or upgrade cooling system.

  • Monitor temperature of your CPU.

2. 💾 Computer Repair - Hard Drive Failure

• Symptoms of Hard Drive Failure: Slow boot times, frequent PC crashes, Computer Freezes up, Corrupted files, clicking noises coming from your computer.

• Causes of Hard Drive Failure: Mechanical wear (HDD), bad sectors, power surges.

• Risks of Computer Hard Drive Failure: Data loss, system instability.

• How to Repair Computer Hard Drive Failure:
  

  • Back up Data: One of the best ways to do is to Backup Your Computer Data always. EaseUS Data Backup is known to be good. immediately if drive shows signs of failure.

  • Run disk check tools. (in Command Prompt type chkdsk C: /f /r where C: is your Hard Drive, /f will fix the disk errors, and /r will locate and fix bad sectors on your hard disk and recovers readable data.)

  • Replace failing HDD/SSD and Restore Data from backup.

  • Consider upgrading to SSD (Solid State Drive) for better reliability.

3. ⚡ Computer Repair - Power Supply Unit (PSU) Failure

• Power Supply Failure Symptoms: Your Computer won’t turn on, random reboots, burning smell.

• Causes of Computer Power Supply Failure: Voltage fluctuations, aging components.

• Risks: Can damage other components of your computer if power supply fails catastrophically.

• How to Repair Computer Power Supply Failure:

  • Test with a known working PSU or PSU tester.

  • Check for burnt smell or bulging capacitors and replace if found.

  • Use a surge protector to prevent computer damage in future.

  • Choose a PSU with enough wattage and good reviews.

4. 🧠 Compter Repair - RAM Failure

• Symptoms: Computer shows Blue Screen of Death (BSOD), PC freezing, random restarts.

• Causes: Faulty RAM modules, improper RAM installation, electrical damage.

• Risks: Computer crashes, data corruption.

• How to Repair Computer RAM Issues:

  • Reseat RAM sticks (remove, clean the contact points using an eraser and reinsert).

  • Test with one RAM stick at a time to isolate faulty module.

  • Use mdsched.exe in Command Prompt to use inbuilt Windows tool to scan for Computer Memory errors.

  • Replace faulty RAM with compatible modules.

5. 🖥️ Computer Repair - Motherboard Problems

• Symptoms: No power in your computer, peripherals not working, BIOS errors.

• Causes: Computer has Physical damage, capacitor failure, overheating.

• Risks: Can affect multiple computer components at once.

• How to Repair Computer Motherboard:

  • Inspect for physical damage or blown capacitors which are bulged.

  • Reset CMOS by removing the CMOS battery on the Computer Motherboard for 5 minutes.

  • Test with minimal setup (CPU, RAM, PSU only).

  • If not working, replace your computer motherboard. Ensure motherboard is compatible with CPU and RAM before installing a new one.

6. 🎮 Computer Repair - Graphics Card (GPU) Failure

• Symptoms of Computer Video Card Failure: Screen flickering, artifacts, Device_Driver_Errors, poor gaming performance.

• Causes: Overheating, driver conflicts, old hardware.

• Risks: Visual glitches, inability to run graphic-intensive tasks.

• How to Repair Computer Graphics Card Failures:

  • Reseat the GPU and check power connectors.

  • Update or Reinstall drivers. EaseUs DriverHandy is a popular Certified Driver update software.

  • Test in another system if possible.

  • Replace if artifacts or crashes persist.

7. 🔌Computer Repair - USB Port Malfunction

• Symptoms: Devices not recognized, intermittent connectivity.

• Causes: Driver issues, physical damage, power management settings.

• How to Repair Computer Graphics Card Failures:

  • Try different ports or cables.

  • Check Device Manager for driver issues. (Press Windows Key + X → then press M)

  • Disable USB selective suspend in power settings.

  • Replace damaged ports via motherboard repair or USB expansion card.

8. 🌬️ Computer Repair - Cooling System Failure

• Symptoms of Computer Cooling System Failure: Overheating, loud fan noise, thermal throttling.

• Causes: Dust, broken fans, clogged vents.

• Risks: Accelerated wear of internal components.

• How to Repair Computer Cooling System Failure:

  • Replace broken fans or pump (for liquid cooling).

  • Clean radiator and fan blades.

  • Ensure fan headers are properly connected.

  • Upgrade to better cooling if needed (e.g., tower cooler, AIO).

9. 🖱️Computer Repair - Peripheral Failures

• Symptoms: Keyboard/mouse not responding, computer behaves erratically.

• Causes: Loose connections, Out of date and old Driver files, wear and tear.

• Fixes:

  • Test peripherals on another PC.

  • Reinstall_Drivers or update firmware.

  • Replace worn-out devices.

  • Use powered USB hubs for high-draw devices.

10. 🔋Computer Repair - BIOS/CMOS Battery Failure

• Symptoms: Computer time is incorrect, shows incorrect date, boot errors.

• Causes: Dead CMOS battery.

• Risks: Computer Boot issues, loss of BIOS settings.

• How to Repair Computer BIOS/CMOS Battery Failure:

  • Replace the CMOS battery (usually CR2032 coin cell).

  • Reset BIOS settings after replacement.

  • Save correct time/date and boot order.

I hope you are able to do Computer Repair yourself sitting at home, without calling a computer technician and spending money or taking your PC Laptop to a computer repair shop and spending even more money. Please Share this page with those who are having a PC Laptop issues mentioned here and save them some money.

In case of a computer software problem, then I would recommend your to use System_Mechanic_Ultimate_Defense which is the best choice.