How to remove/ delete the pre-existing home path and point it to new location

Hello, I have installed OrCAD 17.2 in C drive later I uninstalled it and re-installed in D drive but the home path isn't getting updated. The home path is getting pointed to previous home path location when the tool is opened. In computer >> properties >> advanced system settings >> environmental variables the home path is pointed to new location but when the tool is opened it picks the home path from the previous path location Kindly help me resolve this. Thanks, Shiv