I like using norton power eraser it finds bad stuffs & it removes bad stuffs for you.It really works great.I use support button at open norton security suite to check the connections.it really works well with auto fix.then i use diagnostic report at tuneup that works very well too.these three options you should check almost every day.power eraser is once a week to make sure.do not forget to go to windows update to check your drivers/device is updated.my computer is smooth & fast.had no problems with it.Have a good day.