I did a scan using CCleaner, ATF Cleaner & Lavasoft Ad-Aware and was able to stop the Auto Reinstallation of the Malware Defense Software popup but cannot proceed further using other Anti-Malware or McAfee. Restored the system to earlier date, but not helping.
Worst of all, I was unable to run my Malwarebytes' Anti-Malware, and McAfee that were already installed in the computer. Seems like Malwarebytes & McAfee have disappeared from the computer. Tried to reinstall both softwares or even rename the setup.exe file .. but it all failed.