Hi there kashifa sultana,
Have you emptied the recycle bin? If you haven't, you can try that.
I guess you can use the tool that neptunus suggested as well.
Here's a useful link on how to free up some storage space: http
/www.howtogeek.com/125923/7-ways-to-free-up-hard-disk-space-on-windows/
Cheers,
D_KNow_WD