How does win7 upgrade nodejs or completely uninstall nodejs?

  node.js, question

Win7 wants to upgrade nodejs from 0.10 to 0.12. After installing 0.12 directly, check whether the version of node is still 0.10, but the list of inside uninstallers in the control panel shows that it is already 0.12. I don’t know why, so I want to reinstall version 0.12 after uninstalling the original nodejs. After uninstalling, cmd inside can check the version of node and still display version 0.10. . . . But obviously it has already been unloaded, as if it is a ghost 5555.
How to solve the problem?

You knock
where node
I will tell you more than two node directories. You can try to delete some of them. Anyway, there is only one directory left, and then update it.