How to Fix Excel Cells Turning Black During Recalculation
Question details
Users experience a display glitch where random cells in a spreadsheet turn completely black while formulas are recalculating in the background.
- Product
- Microsoft Excel
- Device & OS
- not provided
- Scenario
- Editing data that triggers background formula recalculations in a spreadsheet.
- Observed behavior
- Certain cells, including those not directly related to the edited data, turn black during recalculation. The display is temporarily restored by switching worksheets or undoing and redoing the change.
Before applying these fixes, ensure you save your current progress. You can force Excel to redraw the screen by minimizing and maximizing the window to temporarily see your data before proceeding.
Disable Hardware Graphics Acceleration and Update Drivers
Display glitches like black cells are often caused by conflicts between Excel's rendering engine and your graphics card. Disabling hardware acceleration or updating drivers typically resolves this visual bug.
Hardware graphics acceleration is designed to improve performance by offloading rendering tasks to your GPU. However, outdated display drivers or incompatible graphics cards can cause it to backfire, resulting in random black cells or screen flickering during complex recalculations.
Open Microsoft Excel, click on the 'File' tab in the top-left corner, and select 'Options' at the bottom of the menu.
Navigate to the 'Advanced' tab on the left sidebar. Scroll down to the 'Display' section, check the box next to 'Disable hardware graphics acceleration', and click 'OK'. Restart Excel.
If the issue persists, right-click the Windows Start button and select 'Device Manager'. Expand the 'Display adapters' category, right-click your graphics card, and select 'Update driver'.
Run Excel in Safe Mode to Identify Add-in Conflicts
Third-party add-ins can sometimes interfere with Excel's memory usage and background calculations. Safe Mode helps isolate these conflicts.
Update Microsoft 365 and Repair Office Installation
Outdated versions of Office or corrupted installation files can lead to instability and rendering issues during background tasks.
Switch to WPS Office to Avoid Display and Calculation Glitches
If Microsoft Excel continues to experience rendering bugs, memory issues, or black cells during heavy recalculations, consider trying WPS Spreadsheet. It is a highly compatible, lightweight, and free alternative that handles complex data effortlessly without visual glitches.
Frequently Asked Questions
Why do my Excel cells turn black when I type or calculate?
This is typically a display rendering issue caused by a conflict between Excel's hardware graphics acceleration and your system's graphics card drivers. It can also occur due to temporary memory exhaustion during complex background calculations.
Does upgrading my computer's RAM fix the black screen issue in Excel?
While adding RAM can help with overall performance for large workbooks, the black cell glitch is usually a software or display driver bug. Disabling hardware graphics acceleration or updating your display drivers is generally a much more effective fix than upgrading hardware.
How can I quickly restore the screen if the cells turn black?
You can temporarily force Excel to redraw the screen by switching to another worksheet and then back, minimizing and then maximizing the Excel window, or pressing 'Page Down' and then 'Page Up' on your keyboard.
Is my workbook corrupted if cells randomly go black?
Not necessarily. If the issue happens across multiple different workbooks and goes away when you scroll, resize the window, or switch tabs, it indicates an application-level display issue rather than file corruption.
