DRIVER_OVERRAN_STACK_BUFFER (0xF7)
What is this error?
A driver overran a stack-based buffer. The security cookie check detected the overflow. Always a driver bug.
Common causes
- driver buffer overflow bug
- incompatible driver for OS version
- corrupted driver file
How to fix it
- Identify faulting driver from minidump
- update or remove it
- run sfc /scannow
Too many steps? Crashless can diagnose this automatically — checks your drivers, temps, VRAM, and 400+ known error patterns.
Get free AI diagnosis Detailed analysis
Bug check 0x000000F7 (DRIVER_OVERRAN_STACK_BUFFER) occurs when a driver overflows a stack buffer and the stack cookie (canary value) detects the corruption. This is caught by the /GS (Buffer Security Check) compiler feature. The faulting driver is always identified in the crash dump. This is a security-relevant bug — stack overflows can be exploited. Fixes:
- Check the minidump for the faulting driver,
- Update the driver immediately — this is a serious bug,
- If the driver has no update available: remove or disable it,
- Run sfc /scannow to check if any system drivers are corrupted,
- Report the bug to the driver vendor.
When to seek help
If this error keeps happening after trying the fixes above, it may point to a deeper hardware or system issue. Consider professional help if:
- The crash occurs across multiple games or applications
- You see the same error after a clean Windows install
- Your PC is less than a year old (could be a warranty issue)
- You smell burning or hear unusual sounds from your PC
Or let Crashless do the deep analysis for you -- our AI checks drivers, temps, event logs, and 400+ known patterns automatically.
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