Laptop Keyboard "Ghosting" (Multiple keys at once)
4.5
When you press one key, several other characters appear on the screen.
Symptoms
- Multiple characters
- Wrong keys typing
- Beeping
Possible Causes
- Liquid damage
- Short circuit in keyboard matrix
- Driver error
Step-by-Step Fix
1
Test in BIOS/Safe Mode
If it happens in BIOS, it is a hardware failure.
2
Dry the Keyboard
If you spilled liquid, turn it off and leave it upside down for 24 hours.
3
Replace Keyboard Module
Keyboard matrices are not repairable; the whole unit must be swapped.
When to See a Technician
A single drop of water can bridge two lines in the keyboard matrix, causing "ghost" presses.
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