Have you just lost a file or two while working on something really important where the file was needed? And you came online to heck only this. Well, the first thing that you need to do before it gets too late is to disconnect the internet from the computer on which you deleted the file. Since you have windows 7 undelete files knowledge now, you should download reliable recovery software on your computer so you can run a scan and locate the deleted files. The process may be a little demanding in terms of the requirement of patience but it sure is worthy of taking a chance. It is better to be able to recover your data than to lose it completely, without having any knowledge of where it went. If you want to avoid this situation, you will have to maintain a regular program for backing p your entire data every time so when you lose something, you can instantly revert back to your last save.