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Fix Left Arrow Key Deleting Text in Windows Applications

Steve K Oct 12, 2026 870 views

Question details

The user is experiencing an issue where pressing the left arrow key deletes text or behaves erratically instead of simply moving the cursor backward.

How to Fix Left Arrow Key Deleting Text in Windows Applications

Product: Windows Keyboard Input
Device & OS: Windows
Scenario: Typing, navigating, or editing text within any Windows application.
Observed behavior: Pressing the left arrow key deletes the preceding character or moves the cursor unexpectedly, affecting all applications across the operating system rather than a single program.

Before you start

Before modifying system settings, save any open work and restart your computer to see if a simple reboot clears out temporary keyboard driver glitches.

Solution 1Recommended

Check for Stuck Keys and Toggle the Insert Key

Verify that no keys are physically stuck on your keyboard and ensure that Overtype mode has not been accidentally enabled.

A physically stuck Backspace or Delete key, combined with arrow key inputs, can cause unexpected text deletion. Additionally, accidentally pressing the Insert key toggles 'Overtype' mode in many word processors, causing new keystrokes to overwrite or delete existing text.

Toggle the Insert key

Locate the 'Insert' or 'Ins' key on your keyboard (often near the Delete or Print Screen keys) and press it once to disable Overtype mode.

Inspect the keyboard physically

Press the Left Arrow, Backspace, Delete, and Ctrl keys repeatedly to ensure none of them are physically jammed or stuck in a pressed position.

Clean the key switches

If you are using a mechanical or external keyboard, use compressed air to clear out dust or debris under the affected keys.

Check for Stuck Keys and Toggle the Insert Key

Quick Tip: Toggling the Insert key is the most frequent and immediate fix for text being unexpectedly overwritten while navigating or typing.

Solution 2

Test with an Alternative or On-Screen Keyboard

Isolate the problem to determine if it is a hardware failure with your current keyboard or a Windows software issue.

Solution 3

Run the Windows Keyboard Troubleshooter

Use the built-in Windows diagnostic tool to automatically detect and repair incorrect keyboard configurations.

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Frequently Asked Questions

Why does my keyboard delete text when I try to add new words?

You likely have 'Overtype' mode enabled. This happens when the 'Insert' key on your keyboard is pressed. Toggling the Insert key again will switch you back to standard 'Insert' mode, allowing you to type without deleting existing text.

Can a corrupted driver cause the arrow keys to malfunction?

Yes, outdated or corrupted keyboard drivers can cause keys to misbehave or remap incorrectly. You can fix this by right-clicking the Start menu, opening Device Manager, finding your keyboard, and selecting 'Update driver' or 'Uninstall device' followed by a computer restart.

Is this text deletion issue specific to my word processor?

If the left arrow key deletes text in multiple applications (like web browsers, notepad, and word processors), it is a system-wide Windows or hardware keyboard issue, rather than a bug isolated to a single application like Microsoft Word or WPS Writer.

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