Hi Harshith Guttikonda
Generally what makes a PC slow is what is running on your PC (software), if there is too much running that will make your PC slow
Do you have a 3rd party security suite, or Anti-virus running on your PC?
If so, that is the usual cause of slow Windows, download the removal tool the developers of that security suite provide and uninstall it form your PC, then restart your PC and let Windows Security protect you
If you have any other utilities like a Registry cleaner or PC cleaner . . .etc. uninstall those form your PC
Turn off all unnecessary startup applications and processes:
Press Ctrl + Shift + Esc to open Task Manager
Click on the Startup Tab
See any non-essential items are listed there
If so, select and click 'Disable'
Close Task Manager
Click your Start Button, type msconfig and hit Enter
When the System Configuration dialog opens, click on the Services Tab
Check the box marked 'Hide Microsoft Services'
In the remaining list, see any non-essential items are listed there, uncheck any you find
Click Apply and OK
Turn off all unnecessary Background Apps
Open the Settings App
Go to Privacy - Background Apps
Turn off any App you do not need running in the background
Restart your PC