Office Performance Issues

How to Fix Flickering Black Boxes in Microsoft Office

Phi Hung Vo Sep 25, 2026 869 views

Question details

The user is experiencing persistent graphical glitches in the form of briefly flickering black boxes across Microsoft Office applications.

How to Troubleshoot Flickering Black Boxes in Microsoft Office

Product: Microsoft Office
Device & OS: not provided
Scenario: Using Microsoft Office applications for daily tasks or running them in the background.
Observed behavior: Briefly flickering black boxes randomly appear on the screen. The issue persists even after updating drivers, modifying BIOS settings, disabling hardware acceleration, and running Office in Safe Mode.

Before you start

Before diving into complex diagnostics, ensure your monitor cables are securely connected and try taking a screen recording to see if the black boxes appear in the video capture, which helps isolate software rendering issues from physical hardware defects.

Solution 1

Disable Hardware Graphics Acceleration

Although often tested early in troubleshooting, disabling hardware acceleration remains the primary fix for resolving rendering conflicts between Office and your graphics card.

Microsoft Office leverages your computer's GPU to render animations and interface elements smoothly. However, driver bugs can cause visual artifacts like black boxes. Disabling this feature forces Office to use software rendering.

Open Office Options

Launch any Microsoft Office application, such as Word or Excel. Click on 'File' in the top left corner, then select 'Options' at the bottom of the menu.

Access Advanced Settings

In the Options dialog box, click on the 'Advanced' tab on the left sidebar.

Disable Hardware Acceleration

Scroll down to the 'Display' section. Check the box labeled 'Disable hardware graphics acceleration'. Click 'OK' and restart your Office applications to see if the flickering stops.

Solution 2Recommended

Investigate System Logs and Graphics Hardware

If standard software troubleshooting and Safe Mode fail to resolve the flickering, the issue likely originates from failing hardware, deep OS-level driver conflicts, or faulty GPU behavior that requires log analysis.

Free Microsoft Office alternative

Switch to WPS Office for a Stable, Glitch-Free Experience

If persistent graphics bugs, flickering black boxes, and heavy resource demands make Microsoft Office unusable on your machine, WPS Office offers a highly stable alternative. Enjoy a lightweight application that minimizes rendering conflicts while providing a familiar interface.

1. Download the Installer: Visit the official WPS Office website and download the free installer tailored for your operating system.
2. Install WPS Office: Run the downloaded file and follow the straightforward on-screen instructions to set up the suite in minutes.
3. Open Your Documents: Double-click your existing Microsoft Office files. WPS Office will automatically open them, allowing you to resume your work without disruptive visual glitches.

Seamlessly compatible with Microsoft Word, Excel, and PowerPoint file formatsLightweight architecture significantly reduces GPU and system resource strainFamiliar user interface ensures a rapid, zero-learning-curve migrationFree to use with comprehensive, professional document editing tools

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Frequently Asked Questions

Why do flickering black boxes appear in Microsoft Word?

Flickering black boxes typically occur due to graphics rendering conflicts between Microsoft Office's hardware acceleration feature and your computer's graphics drivers. They can also stem from corrupted OS files or failing physical hardware.

Does opening Office in Safe Mode fix screen flickering?

Safe Mode launches Office without add-ins and with minimal settings. If the flickering stops in Safe Mode, a third-party add-in is likely the culprit. If the black boxes persist even in Safe Mode, it points to a deeper system, driver, or hardware issue.

How can I tell if the flickering is a hardware or software problem?

Take a screen recording of your desktop when the issue happens. If the black boxes appear in the recorded video playback, it is a software or GPU rendering issue. If they are absent in the video but visible on your physical screen, you likely have a faulty monitor or display cable.

What should I do if reinstalling Office doesn't fix graphical glitches?

If reinstallations do not work, the problem is likely external to the Office software. You should focus on investigating Windows Event Viewer logs for driver crashes, updating your system BIOS, or contacting your computer manufacturer for a hardware diagnostic.

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