Test Title

Step 1: Restart Your Laptop

A temporary software glitch can stop the keyboard from working.

• Save your work

• Restart the laptop

• Test the keyboard again

Step 2: Check External Keyboard

Connect an external USB keyboard.

If External Keyboard Works:

• Internal keyboard may have hardware issues

If External Keyboard Also Fails:

• Driver or motherboard issue possible

Step 3: Clean the Keyboard

Dust or dirt can block keys.

• Turn off the laptop

• Use compressed air

• Clean around keys gently

Step 4: Reinstall Keyboard Driver

Windows Steps:

1. Open Device Manager

2. Expand “Keyboards”

3. Right-click keyboard driver

4. Click “Uninstall Device”

5. Restart laptop

6. or Install Keyboard Driver from Laptop Company official Support Sites

Windows will automatically reinstall the driver.

Step 5: Test Keyboard in BIOS

Enter BIOS mode during startup.

Common BIOS Keys:

• F2

• DEL

• ESC

If keyboard works in BIOS:

• Windows or driver issue likely

If keyboard does not work in BIOS:

• Hardware issue possible

Step 6: Check Keyboard Ribbon Cable

Loose ribbon cables can stop keyboard signals.

• Open laptop carefully

• Disconnect and reconnect keyboard ribbon

• Check for corrosion or damage

Step 7: Check for Water Damage

Liquid spills can damage keyboard circuits.

Signs:

• Sticky keys

• Random typing

• Multiple keys not working

Professional cleaning may be required.

Step 8: Replace Keyboard

If all troubleshooting fails:

• Replace the internal keyboard

• Use original compatible model

Possible Causes

• Driver corruption

• Dust blockage

• Ribbon cable loose

• Water damage

• Faulty keyboard matrix

• Motherboard issue

Recommended Solution

Start with software troubleshooting first before replacing hardware.