I have an ancient (6 year old) Gateway PC. It used to work fine, and I'm able to use it daily even now, but for some reason it has been unable to save anything. When I shut down and reboot, it is just like it was before I made changes/saved files. I'm using Avira (free) antivirus. I've done as many of the usual maintenance things I can think of. Here's an example of the problem...I'll download a software update for, say, iTunes or Java or even Windows, but when I shut down and reboot, each of those programs remain as they were and ask if I want to update them - all over again. I had a letter on Word that I saved (or so I though), but it didn't actually save the document. What is going on? Simple fix?
Well, I installed and ran ccleaner you suggested, but it didn't take care of the problem. When I rebooted, ccleaner was no longer there. That's the problem I've been having... installed software goes away when I reboot. Nothing is being saved.