What Makes My Windows Computer Behave Differently After Every Hardware Reinstallation?

I recently reinstalled some hardware components on my Windows computer, but the system behavior seems different every time after the process. Sometimes it works normally, while other times I notice slower performance, missing functions, driver issues, or unexpected settings changes. I have checked the connections and updated some drivers, but I still cannot understand why the same hardware reinstallation process creates different results. I would like to know whether this is caused by Windows configuration, hardware compatibility, driver conflicts, or other hidden factors affecting system stability.