Follow these steps in order. Do each step fully, then try launching PES 2017. Stop when the game runs.
To fix the "d3dx9_43.dll is missing" error in Pro Evolution Soccer (PES) 2017 how to fix d3dx943dll missing pes 2017 work
(optional but recommended):
In some cases, overzealous antivirus software (like Windows Defender) flags the d3dx9_43.dll as a "false positive" and moves it to quarantine—especially if you are using game patches or mods (like Smoke Patch or PTE Patch). Follow these steps in order
The safest and most effective way to fix this is to let Microsoft’s official installer "refill" your missing library files. how to fix d3dx943dll missing pes 2017 work