Unsure of what infected my PC and Slowing it down badly.

You can re-run procedures however I don't think I am going to find any malware. If Norton has stopped complaining about these temp files then that is good.

But what do you mean when you say

What exactly gets stuck? Malware Bytes? SUPERantispyware? Norton?

You need to be clear.

 

Not sure what direction to head in next. Have you got any of those strange files in quarantine at the moment? The ones Norton kept/keeps finding?

 

C:\Windows\System32\sirenacm.dll relates to an MSN messenger audio codec.

 

You are welcome. I just wonder about those temp files... :confused

If Norton is no longer flagging them then you can follow final steps.

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

1. We recommend you keep SUPERAntiSpyware and Malwarebytes Anti-Malware for scanning/removal of malware. Unless you purchase them, they provide no protection. They do not use any significant amount of resources ( except a little disk space ) until you run a scan.
2. If we had you use ComboFix, uninstall ComboFix (This uninstall will only work as written if you installed ComboFix on your Desktop like we requested.)
   • Click START then RUN and enter the below into the run box and then click OK. Note the quotes are required
   • "%userprofile%\Desktop\combofix" /uninstall
     • Notes: The space between the combofix" and the /uninstall, it must be there.
     • This will uninstall ComboFix and also reset hidden files and folders settings back to Windows defaults.
3. Go back to step 6 of the READ ME and renable your Disk Emulation software with Defogger if you had disabled it.
4. Any other miscellaneous tools we may have had you install or download can be uninstalled and deleted.
5. If we had you download any registry patches like fixme.reg or fixWLK.reg (or any others), you can delete these files now.
6. If running Vista, 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.
7. Go to add/remove programs and uninstall HijackThis.
8. Goto the C:\MGtools folder and find the MGclean.bat file. Double click 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.
9. If you are running Win 7, Vista, Windows XP or Windows ME, do the below:
   • Refer to the cleaning procedures pointed to by step 7 of the READ ME
     for your Window version and see the instructions to Disable System Restore which will flush your Restore Points.
   • Then reboot and Enable System Restore to create a new clean Restore Point.
10. After doing the above, you should work thru the below link:
    • How to Protect yourself from malware!

 

Copy the bold text below to notepad. 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 reboot your PC. After reboot, locate and delete the below file if it exists:

C:\Windows\system32\paint.exe


Any change in performance? If not, see the below.

I suggest that you uninstall Symantec Endpoint Protection ( see: http://www.symantec.com/business/support/index?page=content&id=TECH102261&locale=en_US ) Then reboot your PC and see how things are running. Symantec Endpoint Protection has been the cause of many slow PCs.

Then run the below online scan from ESET and attach the requested log:

Using ESET's Online Scanner

 

The only thing I see wrong from your logs is that you are basically out of disk space on your Windows boot drive which is a major problem. Your logs show the below for drive C

Code:

Drive C: 
Description Local Fixed Disk 
Compressed No 
File System NTFS 
Size 43.95 GB (47,185,915,904 bytes) 
Free Space 1.28 GB (1,369,436,160 bytes) 
Volume Name OS_Install 

You cannot run your PC with so little free space on drive C. You need to cleanup and get at least 8 to 10 GB free to allow Windows to run more efficiently. Either that, or you need to reinstall your operating system on a larger hard disk so that you do not have this problem with being out of free disk space.

 

If you cannot free up enough space to keep about 6 to 8 GB or so free, then you should purchase a new much larger drive to install Windows and your other programs onto. Windows does not take up 42 GB of hard disk space so you are using for lots of other stuff.

You cannot run just about anything properly ( including defrag ) with so little free diskspace. Free up space or reinstall on a new larger drive.

 

You would be better off asking about this in the Software Forum but you could just try reinstalling MSN Messenger. There is a possibility that your scans are not freezing on this file at all. It could be that something that comes after it is the problem and you just don't even see the file name listed. You may want to run system file checker and perhaps check your hard disk for errors ( also topics for the Software Forum )