SQL installation fails with "Could not find the Database Engine startup handle". Tried almost all suggestions from internet, but no luck
Answering my own question.
Note: It is not a solution. It is not applicable to any professional environment.
I did a PC factory reset. Deleting all personal apps and files. Then installed it. It installed without any problem. Earlier, I reset the pc but did not remove the files. The installation of SQL had still failed.
My suspicion is that there was some problem with the log on account in my system. But I still do not know the root cause