F9 recovery function may be impacted after Windows upgrade to newer version. If you get error (like BSOD) while trying to recovery system via F9. It may cause your Windows is upgraded to newer version. The upgrade process will overwrite the function configuration of GIGABYTE / AORUS recovery function and make F9 recovery fail. You can download and install GIGABYTE Recovery Fix Tool to solve this situation. Press [WIN] + [R] to run dialog. Execute "winver.exe" to check current Windows version and download relate fix tool from product utilities download page.