UAC apparently still enabled.

No! Just attach your logs and explain what problems you are still having after running the READ & RUN ME FIRST. Make sure that you attach all 5 requested logs.

 

After reading the description of your problems in this thread and in your other thread, my opinion was that it was not due to malware. Your logs all agree. It appears that you have Windows settings issues of some kind.

I suggest that you uninstall all protection software ( like WinPatrol, WinPrivacy, Spybot...etc ) and then reboot just to make sure they are not impacting your ability to make changes to your PC.

Oh and just for the heck of it, try going to the below link and see if you can add a search engine using from this link:

http://www.iegallery.com/Addons

 

You're welcome.

Since you are not having malware problems, it is time to do our final steps:

1. We recommend you keep Malwarebytes Anti-Malware for scanning/removal of malware.
3. Renable your Disk Emulation software with Defogger if you had disabled it in step 4 of the READ & RUN ME.
4. Go to add/remove programs and uninstall HijackThis. If you don't see it or it will not uninstall, don't worry about it. Just move on to the next step.
5. If running Vista, Win 7 or Win 8, it is time to make sure you have reenabled UAC by double clicking on the C:\MGtools\enableUAC.reg file and allowing it to be added to the registry.
6. Now goto the C:\MGtools folder and find the MGclean.bat file. Double click ( if running Vista, Win7, or Win 8 Right Click and Run As Administrator ) on this file to run this cleanup program that will remove files and folders related to MGtools and some other items from our cleaning procedures.
8. Any other miscellaneous tools we may have had you install or download can be uninstalled and deleted.

 

You're welcome. Surf safely!