I know this is probably getting frustrating for you. I am glad to hear that things are running better now. The reason I have been having you do these things is that there are still some problems showing. They may not be readily apparent from the everyday operation of the machine, however if they are not taken care of, they could cause problems for you down the road.
sUBs, the expert and developer of ComboFix, has been advising me on the best way of dealing with the problem. sUBs is a highly regarded expert in the Malware Removal field and I highly recommend that you follow his suggestions. From the ComboFix log, sUBs has identified that you have a problem with the CatRoot folder on your computer. Here is his description:
He has an incomplete/corrupt Catroot folder. CatRoot is where the OS keeps info about the files MS digitally signs. If we don't fix it, the next time he runs SFC or something triggers WFP (Windows File Protection), mayhem may break out.
There are some things that we can do to correct this, however it more than likely will not be a short fix. As you have seen, there will be more steps involved.
In the end, it boils down to what you want to do. It is your computer, and you can decide how far you want to take this. I will be more than happy to continue working with sUBs on the problem, and I am confident that we can resolve it if you are willing to hang in there.
As an alternative, you can choose to not continue with this and leave things as they are. If you are comfortable in the way things are running, and are willing to risk it, than that is your choice.
May advice to you would be to hang in there, and see if we can get things corrected. That way, hopefully we can lessen the chances of something else happening down the road.
Please tell me what you have decided, and what you would like to do.