Looking for data recoverer

Hi

I am saving data in text file from many days onwards. I will open that text file in notepad++.
Today morning notepad++ reload and suddenly shut down. That file went to blank.
By searching google many tutorials followed. There is no backup in %appdata%
There is no previous versions data or no history data. EVen though who can restore the data from yesterday version i need. Who can able to do can contact me

thanks

did you reboot the system? otherwise you can maybe do a memory dump and get it back.
do not write anything to the hdd. use another computer to browse. chances are you kept using the hdd and had data written to it, so it could already haven been overwritten.
doing data recovery remotely is a bit hard, but its possible. however it costs a lot, so you have to think if that data is worth it to spend a lot of money.
nobody can guarantee that the data can be fully recovered, but you still have to pay, so like i said you have to think of how much the data is worth to you.