If your computer has ever frozen, refused to start, or restarted in the middle of your work, you know how frustrating it can be. The good news? Many of the most common computer repair problems can be fixed at home in just a few steps.

This guide covers seven common computer repair problems with easy, do-it-yourself solutions. Whether you’re facing the dreaded Blue Screen of Death or a stubborn USB device, these fixes can save you time, stress, and maybe even money.

1. Blue Screen of Death (BSOD) on Windows

The Problem: Your PC crashes and shows a blue error screen full of cryptic codes.
Likely Cause: Corrupt drivers, failed Windows updates, or faulty software. Sometimes even failing RAM or hard drives.
The Fix:

Restart your computer to see if it was a one-time glitch.
Update your drivers (especially graphics, chipset, and network drivers).
Run System File Checker: type sfc /scannow in Command Prompt.
If the problem continues, run Windows Memory Diagnostic or a hard drive test to rule out failing hardware.

💡 Pro Tip: Use Event Viewer to look up the exact error code. It can point you straight to the cause.

2. Computer Won’t Boot Past a Black Screen

The Problem: You press power, but the screen stays black.
Likely Cause: Loose cables, USB drives interfering with startup, or corrupted BIOS settings.
The Fix:

Unplug external devices (USB sticks, printers, webcams).
Double-check monitor and HDMI/display cables.
Enter BIOS and reset to default settings.
If the black screen happens after the Windows logo, try booting into Safe Mode to troubleshoot drivers.

Sometimes the simplest solution—a disconnected cable—solves what feels like a major issue.

3. Programs Taking Forever to Open

The Problem: Apps drag their feet when loading, making your computer feel ancient.
Likely Cause: Too many startup programs, low disk space, or even malware.
The Fix:

Press Ctrl + Shift + Esc to open Task Manager.
Go to the Startup tab and disable unnecessary apps from launching automatically.
Run a malware/antivirus scan to rule out infections.
Check your storage: Windows runs poorly if your main drive is more than 90% full.

Freeing up space and reducing startup clutter can feel like a full PC upgrade.

4. Keyboard Not Working or Certain Keys Sticking

The Problem: Some keys don’t work, or your keyboard is completely unresponsive.
Likely Cause: Dust buildup, dead batteries (for wireless), or outdated drivers.
The Fix:

Use compressed air to blow out debris under the keys.
Replace batteries or reconnect your wireless keyboard.
Update or reinstall the keyboard driver in Device Manager.
For laptops, perform a full reset (power off, unplug, hold power button for 30 seconds).

If a single key won’t recover, a replacement keycap—or in rare cases, a new keyboard—might be the final step.

5. Mouse Cursor Jumping or Not Responding

The Problem: The cursor freezes, zips across the screen, or ignores you entirely.
Likely Cause: Dirty sensor, bad surface, wireless interference, or driver issues.
The Fix:

Clean the bottom sensor with a soft cloth or cotton swab.
Swap batteries or recharge if wireless.
Use a flat, matte surface or a mousepad.
Try another USB port, especially if you suspect wireless interference.

In crowded offices, other 2.4GHz devices can disrupt wireless mice—Bluetooth is sometimes more stable.

6. Computer Suddenly Restarting on Its Own

The Problem: Your PC reboots unexpectedly, often at the worst possible time.
Likely Cause: Overheating, power supply problems, or Windows settings.
The Fix:

Clean dust from fans, vents, and heatsinks.
Make sure your computer has proper airflow and isn’t crammed against a wall.
Disable automatic restart on system failure so you can see the real error message.
Check for failing updates or run hardware diagnostics (RAM test, PSU check).

Overheating is the most common issue here, and a good cleaning often solves it.

7. USB Device Not Recognized

The Problem: You plug in a flash drive, printer, or webcam, and nothing happens.
Likely Cause: Bad USB port, corrupt drivers, or missing manufacturer software.
The Fix:

Try a different USB port (front ports can sometimes be weaker).
Restart your PC and try again.
Reinstall USB drivers via Device Manager.
Test the device on another computer to confirm it works.
If it’s a printer, webcam, or other special device, download the latest driver/software from the manufacturer’s website.

This simple fix often beats the hassle of thinking your hardware is broken.

Final Thoughts

Most of these issues look scary, but the fixes are often quick and simple. By learning a few basic computer repair skills, you can solve problems like slow startups, black screens, or hardware glitches without needing a shop visit.

Of course, if problems persist after these steps, that’s when professional repair services can step in. But in many cases, these DIY fixes will save you a trip, keep your computer running longer, and give you confidence in handling your own tech.

Frequently Asked Questions (FAQ)

How often should I clean my computer to prevent issues?

Cleaning your computer every 3 to 6 months helps prevent overheating, dust buildup, and hardware failure.

Can outdated software slow down my computer?

Yes, running old versions of Windows or drivers can cause compatibility problems and make your system sluggish.

Is it safe to use free antivirus programs?

Free antivirus tools offer basic protection, but pairing them with regular updates and safe browsing habits is essential for full security.

How long should a computer last before needing repair or replacement?

Most computers last 4 to 6 years with good maintenance, though upgrades can extend their usable life.

Why does my laptop battery drain so quickly?

Laptop batteries drain fast due to aging cells, too many background apps, or high-performance settings.

What’s the difference between computer repair and computer maintenance?

Computer repair fixes existing problems, while maintenance focuses on prevention through updates, cleaning, and tune-ups.

Can overheating permanently damage my computer?

Yes, consistent overheating can shorten the lifespan of your CPU, GPU, and other critical components.

Computer Repair Made Simple: 7 Common Issues and How to Fix Them