How to solve "Couldn't load launcher core from C:\User\fyh02\Downloads\game\launcher.dll:LoadErrorNotPresent" and "Unable to start the Minecraft Runtime Environment. This is most likely caused by a corruption. Please try to reinstall Minecraft.

when i open my minecraft launcher, it show a message "Couldn't load launcher core from C:\User\fyh02\Downloads\game\launcher.dll:LoadErrorNotPresent". when i close this message, another message was shown : "Unable to start the Minecraft Runtime Environment. This is most likely caused by a corruption. Please try to reinstall Minecraft." I try to reinstall Minecraft but that not work. how to solve this problem?