[iamharivpillai]

@64GTOBOY Thanks, again, for your suggestions.
Like you suggested, I did the following:

1) Ensured that the Playback Default device is set to "Speakers / Headphones(Realtek Audio)"
2) Changed the Recording Device Default to "Microphone (Realtek Audio)"
3) Under the Playback Devices section of Sound settings, I could see that the "Speakers 2 -UMC204HD 192k)" (which is my Audio Interface) has the status "Ready".
4) Also, under the Recording Devices section of Sound settings, the "Microphone 2 -UMC204HD 192k)" (Audio Interface) has the status "Ready".
5) set the sample rate and bit depths of the laptop's inbuilt Speaker to 24 bit, 44100 Hz (It was earlier set to 48000Hz).
6) Restart the computer.

After doing the above, the crashing issue persists.


Results
=======
1.) Launch Pro Tools
2.) When the splash screen appeared on the screen, hold down the "n" key on the keyboard
3.) The splash screen comes up displaying info about drivers loading, etc. and then comes the popup that says:
"Welcome to Pro Tools First. Before you get started you will be directed to the Playback Engine. Please be sure that the proper audio playback service is selected." Then, when I click OK, the program crashes and another popup shows:

This time though, I could also see PTF Open in the background with the File Edit Menus ...

But, by clicking OK, PTF crashes.

"Pro Tools First Application has stopped working. A problem caused the program to stop working correctly. Windows will close the program and notify you if a solution is available." I click OK, the program closes entirely and no solution comes.