Yes you are right,antivirus software is not enough to protect your computer. A good registry product is quite necessary for computer. Advanced PC Tweaker is a good choice for you. It has been a long time without registry clean since you bought your computer,it must have produce a lot of junks when it is operating. Advance PC Tweaker can give your computer a thorough scan and clean useless things,so your troubles fixed. It can co-exist well with your antivirus software and mutual support.
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