SOLUTION:
1. Go to run -> Services.msc -> Nvidia Telemetry Container -> Right click -> Properties -> Log on -> Click on Local System Account -> Apply
Then start the Telemetry container service if it is not already running. Now try to open Geforce Experience. If it doesn't, then try using the following method as well.
2. Go to run -> Services.msc -> Nvidia Display Container -> Right click -> Properties -> General -> Startup Type -> Click on automatic