Why real player alternative vista is not working?

From last six month I am using vista. Some time I face the same problem that you are facing right now when my real player stop working. When this problem arises first time I was wondering what I have to do for shorting out the problem. I was thinking about calling for some mechanics but one of my friend suggest me that you should try to short out this problem by own self. For that I have uninstalled my real player software from my computer and after that I have restart my system and I have reinstall that software again. This time my real player was working. My friend told me that this was happening due to your Software was corrupted. It was corrupted due to some virus. So you can repeat the same procedure for your real player and I hope the problem will remove permanently. It was really nice to help you.