A non overclock allowed locked cpu on a non overclock allowed motherboard, with a non overclock allowed locked bios.
No. You cannot overclock.
All you can do is streamline windows by disabling things like Xbox DVR, game helper, turning off Cortana and Windows Store, regular clean outs of cache, temp files, junk files, etc. Minimizing running services like steam, origin, oracle, etc when not actually in use....