This is why wise folks back up their systems.
When you've gotten your system back like you want it, I urge you to get yourself an external hard drive and a good 3rd party backup program. You can set it up to do everything automagically at the time and frequency of your choice. 1 TB external hard drives are about $70 these days and a really good FREE backup program is the Easeus todo backup free which you can download from
http://www.todo-backup.com/products/home/free-backup-software.htm . That can save you a lot of time and frustration the next time something like this happens. Sooner or later it happens to all computers for one reason or another.
Running my PC with XP. I seemingly installed a trial version of AVG 2013 (I don't remember doing this) and I then tried to download th 2013 free version. There was no success and so I used the system's uninstal capability to uninstal AVG. I then successfully downloaded and installed AVG free version. However, when I opened outlook express my personal file has disappeared. I cannot find any trace of it on my PC. Is there any hope that it is "hiding" somewhere and could possibly be retrieved?