PowerPoint crashes usually trace back to one of three things: a corrupted add-in, a damaged template or file, or a graphics rendering issue. Work through these roughly in order of how common they are.
1. Start PowerPoint in safe mode
Hold Ctrl while opening PowerPoint (Windows), or run it from the Run dialog with powerpnt /safe. Safe mode disables add-ins and some rendering features. If PowerPoint opens fine in safe mode but crashes normally, the problem is almost certainly an add-in or a corrupted setting, not PowerPoint itself.
2. Disable add-ins one at a time
Go to File > Options > Add-ins, then at the bottom select COM Add-ins and click Go. Uncheck all of them, restart PowerPoint, and confirm it's stable. Then re-enable add-ins one at a time, restarting between each, until you find the one causing the crash.
3. Disable hardware graphics acceleration
Go to File > Options > Advanced, scroll to the Display section, and check Disable hardware graphics acceleration. This is especially worth trying if crashes happen specifically when inserting images, playing animations, or using transitions — all GPU-rendered features.
Tip: if crashes only happen with one specific file and not new presentations, the file itself is likely damaged. Try File > Open, select the file, and use the dropdown arrow next to the Open button to choose Open and Repair.
4. Clear the PowerPoint cache and recent files list
A bloated recent files list or corrupted cache can cause crashes specifically on startup. Go to File > Options > Advanced, scroll to Display, and reduce the number of recent presentations shown — sometimes setting it to 0 and back resolves startup crashes.
5. Repair Office
If crashes persist across multiple files and safe mode, the Office installation itself may be damaged. On Windows, go to Settings > Apps, find Microsoft Office, and choose Modify > Online Repair rather than Quick Repair — it's slower but fixes more underlying issues.
6. Check for conflicting fonts
Corrupted or duplicate font files are an underrated cause of PowerPoint instability, especially in presentations with heavy custom typography. If crashes are tied to a specific presentation with unusual fonts, try opening it on a different machine to see if the issue follows the file or stays with your installation.
The bottom line
Most recurring PowerPoint crashes trace back to a problematic add-in or hardware acceleration, not a damaged Office installation. Safe mode is the fastest way to confirm which category you're dealing with before going further.