IDT Info Solution's technical support team is quite well in providing technical support, they have well trained professional members in the team.
I have experienced this yesterday, so I think that I should write for them.
Technical Expert( Name-David) picked up my call, I told him about the computer issues and he told me that It's happening because of infected files which reduce the computer performance.
He took around 50 minutes to remove all the infected files and install a security application for future security.

Now, Computer is working properly without any issue. Thanks for support David and IDT solutions.