Trojan+ Serious Malware Computer is unusable

Can you boot into safe mode? If so, try doing as much of this as possible:

READ & RUN ME FIRST. Malware Removal Guide

 

You can try uninstalling AVG with this LINK.

What happened when you tried to run C:\MGTools.exe?

Did you try renaming any of the scans?

Are you trying to do this in safe mode?

 

Can you run C:\MGTools.exe? We need to be able to get some logs to see what is happening.

 

Please put ComboFix directly on your desktop, not here:
Running from: c:\users\Doneil\Downloads\ComboFix.exe

Now attach this:
C:\MGlogs.zip

 

Please go to add/remove programs and uninstall Messenger Plus!!

Now run the C:\MGtools\GetLogs.bat file by double clicking on it (Note: if using Vista, don't double click, use right click and select Run As Administrator).

Then attach the below logs:

* C:\MGlogs.zip

 

I am not seeing much in the way of malware in your logs.

Let's just do this:

Please disable all anti-virus and anti-spyware programs while we do the following (re-enable when you are finished):

Run C:\MGtools\analyse.exe by double clicking on it (Note: if using Vista, don't double click, use right click and select Run As Administrator). This is really HijackThis (select Do a system scan only) and select the following lines but DO NOT CLICK FIX until you exit all browser sessions including the one you are reading in right now:

After clicking Fix, exit HJT.

Now copy just the bold text below to notepad (Do not include any space above the word REGEDIT). Save it as fixME.reg to your desktop. Be sure the "Save as" type is set to "all files" Once you have saved it double click it and allow it to merge with the registry.

Make sure that you tell me if you receive a success message about adding the above
to the registry. If you do not get a success message, it definitely did not work.

Now use windows explorer to find and delete:
C:\Program Files (x86)\Messenger Plus! Live
C:\Users\Doneil\Local Settings\TEMP\41530318194006246.tmp
C:\Users\Doneil\Local Settings\TEMP\4601940824006246.tmp

Now boot into normal mode and see if you can run SAS and MBAM.

Tell me what issues you are still having, if any.