Hi @daljeetid and welcome to the Joulescope forum!
Your Joulescopes are designed to automatically use the WinUSB driver that is included with Windows 7 SP2 and newer. Joulescopes should not need any driver installation process. However, we have found some unfriendly software in the wild that attempts to claim Joulescopes, but we have not yet identified what software it is.
See Joulescope UI does not connect to JS220 and Joulescope UI does not discover connected Joulescope.
Does this help?
If not, can you post what you see in Device Manager?