I went by all the instructions and the first time I rebooted my computer, it was worse than before. I rebooted a second time and tried to open my email to send them a nasty-gram, because my computer was slower than before, but I couldn't get to my email. Then I completely shut down the whole system and left it overnight. I turned off everything connected to my computer. I turned on my computer in the morning, and now it's running great.
Bottom Line: Yes, I would recommend this to a friend