Running Slow

My computer has been running pretty slow lately. My son, the computer wizard, blames all the pictures I have on here. I blame it on all the videos he downloads. In reality, it is probably a combination of those two thing, plus a lot of other stuff. I need to use one of the top 3 registry cleaners to get rid of all the stuff I don't need. If that doesn't work, I will just give my computer to my brother so he can work his magic.