Hello Vikrant,
Thanks for your response. As advised, I had run sfc/scannow and got the result as " Windows Resource Protection did not find any integrity violations "
Going through certain blogs, I noticed that instead of typing out " services.msc ", all this time I was typing " services msc " ..... without the dot in between. As a result i had this problem.
Now when I type " services.msc " [ the correct way ] I am directed to the services console listing all the services.
Call it my ignorance, but I must appreciate all your efforts to resolve my issue Thank you so much.
Rajdeep