Asslaam o ALAKIUM

Dear exports and friends i am very much thankful from the core of my heart to all the team of IT Dunya i learn about computer from abc to little bit that i know now.
i am facing a great great problems i ha toshiba lab top of 500 gm divided in to 4 drive of 100 gb all
few day ago virus of different kind attack on my system and all my drive be came corrupted i try my best to get ride of this issue i ask from responsible members of this forum they help me guide me in different ways but unfortunately all the effort fail to recover my system latest i install new window 10 c drive is ok other all data in 3 drive are corrupted. not any single file are folder is opening.
now please tell me how can i recover my import file that are official now i tell you i am serving in pakistn defense force
all documents are confidential.
sorry friends i take your time i shall be very much thankful to all the team of it dunya Allha Hafiz