@siamak49 Sorry, the problem persists, how ever it seems going to safe mode does some good. I tried disabling the error reporting on safe mode and no flickering for 2 days. Again uninstalling the Intel graphic card in safe mode and flickering stopped for
some time. In all these operations that weren't permanent, safe mode was the common operation between them.

I ran trouble shooting on power in safe mode. Miraculously, the flickering has stopped. May be you don't need to go on safe mode.