How to completely remove mystarting123.com browser hijacker from my chrome?

[REDACTED]

My Google Chrome browser has been infected with mystarting123.com browser hijacker. mystarting123.com has become the default search engine and I can't even change the default search engine. It is stubborn. Every time I start chrome, a mysterious process runs automatically, which I can't even detect in the task manager. A screenshot has been attached here. The black camera-like process is the culprit most probably, and it disappears in a few seconds.
I have even tried resetting the settings of chrome, but that didn't work either.

I have Avast (free) in my PC. Avast real-time protection can't detect this hijacker. I have also tried boot-time scan with additional virus definitions, but it couldn't detect it. I have tried Malwarebytes Anti-Malware and AdwCleaner. Both of them can detect this infection, but can't completely remove it. The files that are getting changed automatically because of this hijacker are:

Web Data
Preferences
Secure Preference

All of these are located in the folder
C:\Users\USER\AppData\Local\Google\Chrome\User Data\Default

I have tried the whole procedure mentioned here: https://www.bleepingcomputer.com/virus-removal/remove-the-mystarting123.com-home-page
But I couldn't get rid of this hijacker.

Avast has never been good at removing Adwares and Browser Hijackers. Hope I will get a solution to my problem soon and Avast will have features to combat against Adwares and Browser Hijackers.

[Asyn]

Start a new topic in V&W and post your logs there: https://forum.avast.com/index.php?action=post;board=4

[Eddy]

Do you have PUP scanning enabled in avast ?

[Pondus]

If not already done (it is mentioned in the guide you gave link to) you may try this first  >>  https://www.malwarebytes.com/adwcleaner/