The Who deleted 798 gb dat

after 3 hours it just said that and closed itself before showing anything I have to recover 863 gb is that too much for the program... And I tried to close when its on the step 2 same thing it crashed this time seriously help i mean it .I am not writing these this things for showoff.It s a forum

Hi i accidently deleted all my files (798gb) in my hard disk (:F) music,games,movies and all my family photos:( first when i started with deep scan and it took 3 hours to finish step 1 then suddenly program crashed for no reason (it closed my eng sucks) in my second attempt it took 3 three hours again and then in step 2 it crashed the whole pc on my third attempt i patiently wait 3 hours again ... when it s completed(%100 all steps) there was no files at all (program didn t show me any files for recovery) but when i tried to cancel the scanning progress at %4 i saw some of my music and i could recover them so... What am i doing wrong on this situation why it doesent show up anything when all the steps are done PLEASE HELP!!! or I am in really big trouble 11th grade kid