UltimateDNSChanger (simple but very powerful, tested) for PC, based on a simple Python script It's totally safe and didn't modify/change hardware-level settings.

*Features · Protects your privacy · Gives you DNS control · Blocks IPv6 leaks · Works reliably · Blocks IPv6 completely · Changes DNS securely · Maintains blazing fast speeds · No more location leaks through IPv6

P.S. Always run as administrator.