hello everyone! im looking for a software that can track problems in my computer specially in hardware and blue screen of deaths. please help me thanks in advance. really love everyone in yahoo!!!

Hello Everyone,
In the last 2-3 months, I have been installing and uninstall some software from the internet, things like Tortorrent download tools, software tools, Eclipse, NetBeans, Quick timer, iTunes.. etc.. a lot of them. Then after using them, I have uninstalled a few cuz I realized I no more need them. Now my Pc is running very slow. Also I faced a problem where this ccsvhost.exe (Norton related) stuff would eat up all the memory and cpu, I just found a work around I open up norton then disabled few kind of scans like messanger and such stuff or background scan, that helped me from norton slowing down the system. Having done all this good lot of crap.. Now I am feeling I need to clean up my registry. I understand that I am trying to install one more tool, but any tool that is worth installing and that might clean up my registry, without bothering me to buy the software in the middle of its job? I mean it totally annoys when it says so many issues are identified with your registry, but plz subscribe for it to further clean up :(. .. It will be a great help if anyone of you help me with this.
Thank you in advance.
Hi all, Thanks to you all for the reply.

I just used Advance System Care free ware, so far so good, I will see for a day or two and if it looks fine then shall update again with the observations and then try the suggestions by other guys.